CN206348777U - The unrelated quantum random number generator of one introduces a collection - Google Patents
The unrelated quantum random number generator of one introduces a collection Download PDFInfo
- Publication number
- CN206348777U CN206348777U CN201621350213.8U CN201621350213U CN206348777U CN 206348777 U CN206348777 U CN 206348777U CN 201621350213 U CN201621350213 U CN 201621350213U CN 206348777 U CN206348777 U CN 206348777U
- Authority
- CN
- China
- Prior art keywords
- random number
- module
- quantum random
- phase
- number generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses the unrelated quantum random number generator of an introduces a collection and quantum random number method for generation, the unrelated quantum random number generator in source includes the transmitting terminal and receiving terminal being mutually matched, and the receiving terminal includes：Beam splitting module, receives the light pulse from transmitting terminal and is divided into two-way output；Z basic vector time detecting modules, the first via output progress Z basic vector times for receiving beam splitting module detect；Acquisition processing module, for gathering the result of the Z basic vectors time detection and generating quantum random number；Intervention module, the second tunnel for receiving beam splitting module is exported, and is exported after interference；X basic vector phase detection modules, for receiving the output of intervention module and carrying out X basic vector phase detections；Error code detection module, for gathering the result of the X basic vectors phase detection and calculating the bit error rate.The utility model obtains completely random binary string after being post-processed according to Z basic vector time result of detections, with higher into code check.
Description
Technical field
The utility model is related to Technique on Quantum Communication field, the unrelated quantum random number generator of a more particularly to introduces a collection.
Background technology
Nowadays Quantum Secure Communication has obvious advantage in terms of data transmission security, and gradually practical
Change.The use of wherein random number ensure that the secure communication in many fields, and this also causes the extensive concern of scientists.
In cryptography, safe random number input is the basis of secure communication, according to definition, and the random number that computer mode is produced is pseudo-
There is the danger of Latent destruction coded communication safety in random number, powerful Long-Range Correlation, to solve this problem, in recent years section
Scholars are directed to the research of quantum random number generator, and production program is proposed successively, and have gradually been commercialized.
But quantum random number generator can also have security breaches, it is preferable single photon generally ideally to think source
Source, if but source is broken down or the quantum signal sent out of source is replaced by classical signals, then and the random number of final output will no longer
It is true random number.It can permit to solve the above problems, the Chinese patent application of Application No. 201410449817.7 proposes one
Perhaps the unrelated quantum random number generator scheme in the highly attenuating source of signal, can be produced truly random in the case where not believing that source
Number.The production method of the unrelated quantum random number in the source, the photon signal that receiving terminal reception source is sent is converted into the single photon of equivalence
Signal, X basic vectors are carried out to single photon signal or Z basic vectors are modulated and carry out projection measurement.Error code is calculated according to Z basic vectors measurement result
Rate, obtains completely random binary string after being post-processed according to X basic vector measurement results.
But according to X basic vectors measurement result obtain completely random binary string it is not high into code check, and calculate and model set
Meter is complicated.
Utility model content
The utility model provide the unrelated quantum random number generator of an introduces a collection, can produce by quantum mechanics ensure it is true with
Machine number, the annexation of error rate calculation module and quantum random number generation module is improved for prior art problem, and is carried
The improvement about light path inside transmitting terminal and receiving terminal is supplied.
The unrelated quantum random number generator of one introduces a collection, including the transmitting terminal and receiving terminal being mutually matched, the receiving terminal bag
Include：
Beam splitting module, receives the light pulse from transmitting terminal and is divided into two-way output；
Z basic vector time detecting modules, the first via output progress Z basic vector times for receiving beam splitting module detect；
Acquisition processing module, for gathering the result of the Z basic vectors time detection and generating quantum random number；
Intervention module, the second tunnel for receiving beam splitting module is exported, and is exported after interference；
X basic vector phase detection modules, for receiving the output of intervention module and carrying out X basic vector phase detections；
Error code detection module, for gathering the result of the X basic vectors phase detection and calculating the bit error rate.
For the unrelated quantum random number generator in source in the utility model, any hypothesis (i.e. source is unrelated) is not done to source, is led to
The change measurement basic vector of beam splitting module at random is crossed, part random binary string can be obtained according to Z basic vector times result of detection,
The minimum entropy of fetching portion random binary string, is post-processed the binary string to obtain completely random (according to the bit error rate
As a result it is corresponding to deduct the part that adverse party is obtained, and then obtain quantum random number).
The bit error rate is calculated using X basic vector phase detections result and then weigh how many key information by him in the utility model
People obtains.The bit error rate is：The total degree of number of times/measurement of probe response mistake.
When detecting the receiving terminal progress Z basic vector times, according to once measuring principle of collapsing, the single photon of light pulse pair is (single
Photon be in light pulse pair overlaying state) can be collapsed in any of which light pulse, so according to the detected time before and after
Come the acquisition of the binary string of realizing completely random.Because the constant phase difference of two light pulses of light pulse centering is 0, X is carried out
Two-way can be obtained during basic vector phase detection by interference to export, in addition to all the way independent response of the phase difference for 0, other situations
It is considered as error code, therefore the bit error rate can be just calculated by simply counting to add up.
Because the light pulse of preparation is 0 to phase difference, therefore can be based on common lasers without volume in transmitting terminal
Outer phase modulation device, simplifies system and reduces cost.Certainly relevant light source is additionally provided in transmitting terminal the utility model
Other improvement projects.
If it is not 0 to phase difference to prepare light pulse in transmitting terminal certainly, but keeps constant, and utilizes identical original in receiving terminal
Reason carries out detection and can be considered equivalent deformation, it is apparent that can increase the complexity of cost and equipment.The transmitting terminal is used to generate
Phase difference based on single photon is 0 light pulse pair, is specifically included：
Single-photon light source, for sending single photon pulses；
Unequal arm interferometer, the single photon pulses generate the light pulse pair through the unequal arm interferometer.
Two row pulses are generated due to needing to prepare light pulse pair, therefore by the way of unequal arm interferometer, wherein a row
It is superimposed after delay with another row, the duration general satisfaction being delayed on unequal arm interferometer：Delay duration is sent less than light source
Light pulse cycle duration.
Optionally, the unequal arm interferometer is unequal arm Mach-Zehnder interferometer, or unequal arm Michelson's interferometer.
Optionally, the single-photon light source is the laser of transmitting single photon pulses, or including transmitting multi-photon pulses
Laser machine and the attenuator that the multi-photon pulses are converted to single photon pulses.
When from other types laser similarly, as the case may be from attenuator, to obtain single photon pulses.
As it is further preferably, in the unequal arm Mach-Zehnder interferometer of transmitting terminal, it is long-armed and galianconism input, it is defeated
Go out end to couple by beam splitter, the beam splitter for being in output end side is polarization-maintaining polarization beam apparatus.
In order to generate the light pulse pair that the phase difference based on single photon is 0 in transmitting terminal, the utility model also provides light source
Improvement, preferably, the transmitting terminal uses phase-modulation light source, the phase-modulation light source prepares laser including phase
With pulses generation laser：
The phase, which prepares laser, to be used to produce long pulse and injected pulse generation laser；
It is 0 short pulse pair that the pulses generation laser, which is stimulated and produces phase difference,.
Described " long pulse ", " short pulse to " are the relative concepts according to both impulse waveforms, not to its pulse
Absolute length, which is constituted, to be limited, the short pulse pair of acquisition, is the light pulse pair that the phase difference based on single photon is 0.
Preferably, in order to optimize light path, the phase-modulation light source is additionally provided with the optical fiber circulator of three ports, described
Phase prepares the long pulse input first port of laser generation and enters pulses generation laser, the arteries and veins by second port
Punching produces the short pulse of laser generation to input second port and by the output of the 3rd port.
In receiving terminal, the intervention module is unequal arm interferometer.
Preferably, in receiving terminal and transmitting terminal, the arm length difference of unequal arm interferometer is equal.
Preferably, in receiving terminal, the unequal arm interferometer is unequal arm Mach-Zehnder interferometer, or unequal arm mikey
The inferior interferometer of that.
As it is further preferably, in the unequal arm Mach-Zehnder interferometer of receiving terminal, it is long-armed and galianconism input, it is defeated
Go out end to couple by beam splitter, the beam splitter for being in input side is polarization-maintaining polarization beam apparatus.
The Z basic vectors time detecting module is a single-photon detector.
The intervention module has two output light paths, and different result of interference are exported respectively；The X basic vectors phase detection
Module includes two single-photon detectors, and a corresponding output light path is connected respectively.
Preferably, the X basic vectors phase detection module includes a single-photon detector, two outputs of intervention module
Light path is multiplexed the same single-photon detector by light path element.
Preferably, two output light paths are multiplexed the same single-photon detector based on time division multiplexing mode.It is specific to set
When can increase suitable delay line on an output light path wherein.
As further preferably, Z basic vectors time detecting module and X basic vector the phase detections module is same list
Photon detector；The first via output of the beam splitting module and two output light paths of intervention module are multiple by light path element
With the same single-photon detector.
Similarly, the first via output of beam splitting module and two output light paths of intervention module are based on time division multiplexing mode
It is multiplexed the same single-photon detector.It can increase suitable delay line at least two light paths during specific setting.
When the Z basic vector times detect, light pulse is reached after single-photon detector, the avalanche optoelectronic two inside single-photon detector
Single photon signal can be converted into electric signal by pole pipe, and electric signal enters electric pulse discriminator, will screen out single photon pulses and makes an uproar
Ping, single photon electric pulse enters limiting amplifier, and limiting amplifier believes the Transistor-Transistor Logic level that electric pulse is limited in certain amplitude
Number, counted by corresponding counter.
During X basic vector phase detections, corresponding coincidence measurement is added after two single-photon detectors, then by corresponding device
Calculate the bit error rate.
What the error code detection module included successively carrying out the result of the X basic vectors phase detection respective handling meets survey
Measure module and error rate calculation module.
Preferably, the result that the error code detection module includes successively to the X basic vectors phase detection carries out corresponding position
Discriminator, limiting amplifier, coincidence measurement module and the error rate calculation module of reason.
Each several part can use prior art for itself in error code detection module.
Recorded while coincidence measurement module is specifically for realizing two detectors.
The response condition that error rate calculation module is originated according to unlike signal, counts error code, the i.e. correspondence interference in signal source
Two output light paths of module, wherein a corresponding phase difference is pi, another corresponding phase difference is 0, error code detection module inspection
It is correct code that the output light path that only phase difference is 0, which is surveyed, when having response, and following several situations are accordingly to be regarded as error code：
Only phase difference has response for pi output light path；
Phase difference is that the output light path that 0, phase difference is pi has accordingly；
Phase difference is that the output light path nothing that 0, phase difference is pi is corresponding.
The modulation of the passive non-equilibrium basic vector of receiving terminal can be achieved in transmitting terminal without actively modulation for the utility model, connect
Receiving end carries out X basic vectors to single photon signal or Z basic vectors are detected.Obtained after being post-processed according to Z basic vector time result of detections
Full random binary string, with more stable into code check；Calculating the bit error rate according to X basic vector phase detections result and then weigh has many
Few key information is obtained by other people, further improves security.
Brief description of the drawings
Fig. 1 is the structural representation of the unrelated quantum random number generator in source of embodiment 1；
Fig. 2 is the structural representation of the unrelated quantum random number generator in source of embodiment 3；
Fig. 3 is the structural representation of the unrelated quantum random number generator in source of embodiment 4；
Fig. 4 is the structural representation of the receiving terminal of embodiment 5；
Fig. 5 is the structural representation of the receiving terminal of embodiment 6；
Fig. 6 is the structural representation of the receiving terminal of embodiment 7.
Embodiment
Embodiment 1
Referring to Fig. 1, the unrelated quantum random number generator in the present embodiment source includes the transmitting terminal and receiving terminal being mutually matched.
The present embodiment produces two in transmitting terminal using the mode of unequal arm Mach-Zehnder interferometer, and there is phase difference to be 0
Light pulse, the light pulse that laser 1 is sent inputs the first unequal arm MZI modules (unequal arm Mach-Zehnder interferometer), through beam splitting
Long galianconism is walked after device 2 respectively, it is long-armed to be provided with delay line 4 all the way, then be superimposed by the two-way light pulse of beam splitter 3, formed based on single
The phase difference of photon is 0 light pulse pair.
The light pulse from transmitting terminal is divided into two-way in receiving terminal, including by beam splitter 5, is inputted all the way as Z bases
Acquired processing module 12 generates quantum random number to the single-photon detector 9 of arrow time detecting module again；
Another road enters the second unequal arm MZI modules (unequal arm Mach-Zehnder interferometer), and length is walked respectively after beam splitter 6
Galianconism, it is long-armed to be provided with delay line 7 all the way, then respectively enter the spy of X basic vectors phase by entering after the two-way light pulse of beam splitter 8 interference
Survey, specially single-photon detector 10 and single-photon detector 11, input error code detection module 13 again afterwards and calculate the bit error rate.
When the progress Z basic vector times detect, the single photon from transmitting terminal is in the overlaying state of two light pulses, according to one
Principle of just collapsing is measured, the detection single photon of single-photon detector 9 can be such that single photon is collapsed in any of which light pulse, such root
According to it is detected around time come the acquisition of the binary string of realizing completely random.
Acquisition processing module 12 includes electric pulse discriminator, limiting amplifier, counter, and light pulse reaches single photon detection
After device, single photon signal can be converted into electric signal by the avalanche photodide inside single-photon detector, and electric signal enters electricity
Pulse discriminator, will screen out single photon pulses and noise pulse, and single photon electric pulse enters limiting amplifier, limiting amplifier
Electric pulse is limited in the Transistor-Transistor Logic level signal of certain amplitude, is that can obtain random binary string by rolling counters forward.
When carrying out X basic vector phase detections, two light pulses that transmitting terminal is sent are interfered at beam splitter 8, phase difference
For 0 arrival single-photon detector 10, phase difference is that pi then reaches single-photon detector 11.
Error code detection module 13 include successively carrying out the result of the X basic vectors phase detection discriminator of respective handling,
Limiting amplifier, coincidence measurement module and error rate calculation module.The principle of discriminator and limiting amplifier can be found at collection
Manage the description in module 12.
Recorded while coincidence measurement module is specifically for realizing two detector institute result of detections, subsequent error detection mould
The response condition of block detection two-way light path calculates the bit error rate.
Because the constant phase difference of two pulses prepared by transmitting terminal is 0, therefore removes only single-photon detector 10
There are all situations outside response, be judged to responding mistake, error code detection module 13 calculates the bit error rate by repeatedly measuring.
Embodiment 2
With reference to Fig. 1, beam splitter 3 and beam splitter 6 are changed to polarization-maintaining polarization beam apparatus by the present embodiment relative to embodiment 1, are protected
The characteristic of inclined polarization beam apparatus is that the tail optical fiber of polarization-maintaining polarization beam apparatus is polarization maintaining optical fibre, and the reflector port of polarization-maintaining polarization beam apparatus
Embed one 90 degree of circulators.
The light pulse that transmitting terminal laser is sent is divided into two-way light pulse after beam splitter 2.Long-armed connection point is walked all the way
The reflector port of beam device 3, polarization be rotated by 90 ° back reflection output vertical polarization light pulse (| V>).Galianconism is walked all the way through beam splitter 3
Transmission port output level polarized optical pulse (| H>).
Two-beam pulse receiving terminal reach beam splitter 6 when, vertical polarization light pulse (| V>) to walk galianconism anti-through beam splitter 6
Penetrate the embedded 90 degree circulators in reflected port polarize be rotated by 90 ° be changed into horizontal polarization light pulse (| H>) transmit to beam splitter 8, water
Flat polarized optical pulse (| H>) walk it is long-armed be transmitted to through beam splitter 6 up to beam splitter 8, two-beam pulse occurs dry at beam splitter 8
Relate to.
Remaining processing procedure can be found in the description of embodiment 1, advantage of this embodiment is that using polarization-maintaining polarization beam apparatus,
Interference efficiency is twice of embodiment 1.
Embodiment 3
Referring to Fig. 2, the present embodiment mainly use light inject thought produce two have phase difference for 0 light pulse,
Each element and flow are referred to embodiment 1 in transmitting terminal application phase-modulation light source, receiving terminal figure.
Phase-modulation light source is made up of two lasers and a circulator, and two lasers are respectively that phase prepares laser
Device 15 and pulses generation laser 14.
Below in conjunction with the difference with embodiment 1, the method that emphasis describes two kinds of generation light pulses of transmitting terminal.
Method one：
The triggering electric signal of two lasers is modulated first, makes two equally spaced uniform pulse sequences of each spontaneous emission of laser
Row, while adjusting the cycle of two pulse trains, make phase prepare each long pulse that laser sends and arteries and veins are included in sequential
Punching produces a pair of short pulses that laser is sent.
It is presetting that phase prepares laserA port input of the long pulse of phase through circulator, b ports are exported to pulse
Laser is produced, a pair of short pulse phase differences for making the triggering of pulses generation laser areA pair of phase differences areShort arteries and veins
Rush the b ports by circulator to input, the output of c ports.I.e. the c ports of circulator as phase-modulation light source output port.
It is presetting that phase prepares laserThe implementation of the long wavelength of phase is as follows：Phase modulation prepares laser
Electric signal is triggered, Δ U voltage disturbance is introduced within the certain duration of electric signal centre position, the disturbance of electric signal is changed
Light frequency, optical frequency difference causes not modulated fractional phase before and after long pulse poorΔ U withIt is linear, by setting
Putting Δ U can be byIt is modulated to arbitrary value.Wherein it should be noted that in order to by pure phase differenceIt is delivered to two short arteries and veins
Between punching, the duration that telecommunications is disturbed is directed at the triggering electric signal interval of pulses generation laser, that is, closes pulses generation and swash
Not modulated part plays modulation when light injects before and after gain of the light device to long pulse herein, the final only long pulse made
Act on, the phase difference that two indistinguishable short pulses and two short pulses are excited in pulse laser is
The present embodiment triggers the modulation of electric signal by preparing laser to phase, realizes the phase modulation mistake of phase-modulation light source
Journey, by modulating Δ U, to realize that phase prepares laser presetting for weB port output of the long pulse of phase through circulator
To pulses generation laser, a pair of short pulse phase differences for making the triggering of pulses generation laser areThen by annular
The c ports output of device.
Method two：
The DC voltage that phase modulation prepares laser makes phase prepare the continuous light of laser transmission and injected pulse generation
Laser；Modulation pulses generation laser makes pulses generation laser launch equally spaced uniform pulse sequence.
Phase prepares laser and sends a port input of the continuous light through circulator, and b ports are exported to pulses generation laser
Device, make pulses generation laser trigger a pair of short pulse phase differences beA pair of phase differences areShort arteries and veins
Rush the b ports by circulator to input, C-terminal mouthful output.I.e. circulator C-terminal mouthful as phase-modulation light source output port.
The light pulse of two methods generation is input to after receiving terminal, be can refer to embodiment 1 and is carried out corresponding subsequent treatment.
Embodiment 4
Relative to embodiment 1, the difference of the present embodiment is that transmitting terminal is produced using unequal arm Michelson's interferometer
Raw two have the light pulse that phase difference is 0.
Referring to Fig. 3 and with reference to related descriptions of the Fig. 1 about receiving terminal, beam splitter 19 is passed through in the light pulse that laser 17 is sent
After be divided into two-way：
Long-armed 90 degree of rotation faraday speculums 18 of arrival are walked all the way, and polarization reaches beam splitting after being rotated by 90 ° along backtracking
Device 19, then export to receiving terminal.
Another road walks galianconism and reaches 90 degree rotation faraday speculums 20, polarizes after being rotated by 90 ° along backtracking to beam splitting
Device 19.Export again to receiving terminal.
The present embodiment should be guaranteed that the unequal arm Mach-Zahnder interference of unequal arm Michelson's interferometer and receiving terminal side
The arm length difference of instrument is equal, with during ensureing finally to carry out X basic vector phase detections, the generation of two pulse interferences, and phase difference is permanent
For 0.
Embodiment 5
Relative to embodiment 1, the difference of the present embodiment is that receiving terminal uses unequal arm Michelson's interferometer, together
When ensure transmitting terminal unequal arm Mach-Zehnder interferometer arm length difference and receiving terminal unequal arm Michelson's interferometer brachium
Difference is equal, and then interferes, and phase difference is 0.The receiving terminal of the present embodiment can also be with other embodiment transmitting terminal phase
With reference to.
Referring to Fig. 4 and with reference to related descriptions of the Fig. 1 about receiving terminal, when carrying out X basic vector phase detections, two-beam pulse
Interfere, phase difference is 0 arrival single-photon detector 10, phase difference is that pi then reaches single photon detection by circulator 21
Device 11.Because the constant phase difference of two pulses is 0, therefore removing only single-photon detector 10 has the institute outside response in love
Condition, is judged to responding mistake, by repeatedly measuring, can calculate the bit error rate.
Embodiment 6
Referring to Fig. 5 and with reference to related descriptions of the Fig. 1 about receiving terminal, relative to embodiment 1, the difference of the present embodiment
It is that two single-photon detectors of transmitting terminal progress X basic vector phase detections are replaced (similarly with a single-photon detector 11
Single-photon detector 11 can be omitted and retain single-photon detector 10), it will so reduce cost.
When carrying out X basic vector phase detections, two light pulses are interfered at beam splitter 8, through beam splitting if phase difference is 0
Device 22 reaches single-photon detector 11, and single-photon detector 11 is reached through delay line 23, beam splitter 22 if phase difference is pi.
The improved procedure of the present embodiment is to reach single-photon detector 11 using two moment to distinguish out of phase difference.
Add a synchronous timing signal before single-photon detector 11, detect arrival time.Phase difference is 0 arrival if no-delay
Single-photon detector 11, phase difference is that pi reaches single-photon detector 11 if having delay.The improvement project of the present embodiment may be used also
To be combined with other embodiment.The error code detection module 13 that the present embodiment is used is that survey is realized according to arrival time difference
Amount and the function of calculating the bit error rate.
Embodiment 7
Referring to Fig. 6 and combine Fig. 1, Fig. 5 about receiving terminal related description, relative to embodiment 1, the difference of the present embodiment
Part is that transmitting terminal (similarly also can only retain single-photon detector 9 or single-photon detecting only with a single-photon detector 11
Survey device 10), it so will further decrease cost.
The light pulse that the progress Z basic vector times detect reaches beam splitter 25, reflected output to single-photon detecting through delay line 24
Survey device 11.
When carrying out X basic vector phase detections, two light pulses are interfered at beam splitter 8, through beam splitting if phase difference is 0
Device 22, beam splitter 25 reach single-photon detector 11, are arrived if phase difference is pi through delay line 23, beam splitter 22, beam splitter 25
Up to single-photon detector 11.
Single-photon detector 11 is exported to acquisition processing module 26, and it also includes the function of having contained error code detection module, can
Coincidence measurement and counting are carried out simultaneously, by being then based on time division multiplexing, therefore it is different according to arrival time, when realizing different respectively
The acquisition process at quarter and the function of error detection.
The improvement project of the present embodiment is to distinguish that (the time flashlight of detection was divided to before two moment using four moment
After reach to make a distinction, the flashlight of phase detection is also classified into reaching to make a distinction before and after two moment) under different basic vectors
Detection, the present embodiment also can have embodiment to be combined with above-mentioned other.
Claims (16)
1. the unrelated quantum random number generator of an introduces a collection, including the transmitting terminal and receiving terminal being mutually matched, it is characterised in that described
Receiving terminal includes：
Beam splitting module, receives the light pulse from transmitting terminal and is divided into two-way output；
Z basic vector time detecting modules, the first via output progress Z basic vector times for receiving beam splitting module detect；
Acquisition processing module, for gathering the result of the Z basic vectors time detection and generating quantum random number；
Intervention module, the second tunnel for receiving beam splitting module is exported, and is exported after interference；
X basic vector phase detection modules, for receiving the output of intervention module and carrying out X basic vector phase detections；
Error code detection module, for gathering the result of the X basic vectors phase detection and calculating the bit error rate.
2. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that the transmitting terminal is used to generate base
The light pulse pair for being 0 in the phase difference of single photon, is specifically included：
Single-photon light source, for sending single photon pulses；
Unequal arm interferometer, the single photon pulses generate the light pulse pair through the unequal arm interferometer.
3. the unrelated quantum random number generator in source as claimed in claim 2, it is characterised in that the unequal arm interferometer is not
Equiarm Mach-Zehnder interferometer, or unequal arm Michelson's interferometer.
4. the unrelated quantum random number generator in source as claimed in claim 3, it is characterised in that the unequal arm Mach of transmitting terminal was once
In Deccan interferometer, long-armed and galianconism input, output end are coupled by beam splitter, are in the beam splitter of output end side to protect
Inclined polarization beam apparatus.
5. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that the transmitting terminal is adjusted using phase
Light source processed, the phase-modulation light source prepares laser and pulses generation laser including phase；
The phase, which prepares laser, to be used to produce long pulse and injected pulse generation laser；
It is 0 short pulse pair that the pulses generation laser, which is stimulated and produces phase difference,.
6. the unrelated quantum random number generator in source as claimed in claim 5, it is characterised in that the phase-modulation light source is also set
There is the optical fiber circulator of three ports, the phase prepares the long pulse input first port of laser generation and passes through the second end
Mouth enters pulses generation laser, and the short pulse that the pulses generation laser is produced is to input second port and passes through the 3rd end
Mouth output.
7. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that in receiving terminal, the interference mould
Block is unequal arm interferometer.
8. the unrelated quantum random number generator in source as claimed in claim 2, it is characterised in that the intervention module is unequal arm
In interferometer, receiving terminal and transmitting terminal, the arm length difference of unequal arm interferometer is equal.
9. the unrelated quantum random number generator in source as claimed in claim 8, it is characterised in that in receiving terminal, the unequal arm
Interferometer is unequal arm Mach-Zehnder interferometer, or unequal arm Michelson's interferometer.
10. the unrelated quantum random number generator in source as claimed in claim 9, it is characterised in that the unequal arm Mach of receiving terminal
In Zehnder interferometer, long-armed and galianconism input, output end are coupled by beam splitter, and the beam splitter for being in input side is
Polarization-maintaining polarization beam apparatus.
11. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that the Z basic vectors time detects mould
Block is a single-photon detector.
12. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that the intervention module has two
Bar output light path, exports different result of interference respectively；The X basic vectors phase detection module includes two single-photon detectors,
A corresponding output light path is connected respectively.
13. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that the X basic vectors phase detection mould
Block includes a single-photon detector, and two output light paths of intervention module are multiplexed the same single photon detection by light path element
Device.
14. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that the Z basic vectors time detects mould
Block and X basic vector phase detections module are same single-photon detector；The first via output and interference of the beam splitting module
Two output light paths of module are multiplexed the same single-photon detector by light path element.
15. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that the error code detection module bag
Include the result successively to the X basic vectors phase detection and carry out the coincidence measurement module and error rate calculation module of respective handling.
16. the unrelated quantum random number generator in source as claimed in claim 1, it is characterised in that the error code detection module bag
Include the discriminator for carrying out respective handling to the result of the X basic vectors phase detection successively, limiting amplifier, coincidence measurement module and
Error rate calculation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621350213.8U CN206348777U (en) | 2016-12-09 | 2016-12-09 | The unrelated quantum random number generator of one introduces a collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621350213.8U CN206348777U (en) | 2016-12-09 | 2016-12-09 | The unrelated quantum random number generator of one introduces a collection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206348777U true CN206348777U (en) | 2017-07-21 |
Family
ID=59322568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621350213.8U Active CN206348777U (en) | 2016-12-09 | 2016-12-09 | The unrelated quantum random number generator of one introduces a collection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206348777U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108182051A (en) * | 2018-01-26 | 2018-06-19 | 北京邮电大学 | A kind of unrelated quantum random number generator scheme in source using photoswitch |
| CN108279863A (en) * | 2018-01-26 | 2018-07-13 | 北京邮电大学 | A kind of unrelated quantum random number generator scheme in source using phase monitoring module |
| CN108446099A (en) * | 2018-05-02 | 2018-08-24 | 如般量子科技有限公司 | The quantum random number generator of the unrelated higher-dimension time encoding in source |
| CN110675716A (en) * | 2019-09-24 | 2020-01-10 | 华东师范大学 | All-fiber quantum state simulation device and method |
| GB2582311A (en) * | 2019-03-18 | 2020-09-23 | Toshiba Kk | A quantum random number generator |
| CN114285574A (en) * | 2022-03-07 | 2022-04-05 | 南京大学 | Source-independent quantum random number generation method and system for resisting strong light blinding |
-
2016
- 2016-12-09 CN CN201621350213.8U patent/CN206348777U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108182051A (en) * | 2018-01-26 | 2018-06-19 | 北京邮电大学 | A kind of unrelated quantum random number generator scheme in source using photoswitch |
| CN108279863A (en) * | 2018-01-26 | 2018-07-13 | 北京邮电大学 | A kind of unrelated quantum random number generator scheme in source using phase monitoring module |
| CN108446099A (en) * | 2018-05-02 | 2018-08-24 | 如般量子科技有限公司 | The quantum random number generator of the unrelated higher-dimension time encoding in source |
| CN108446099B (en) * | 2018-05-02 | 2024-05-14 | 如般量子科技有限公司 | Source-independent high-dimensional time-coded quantum random number generator |
| GB2582311A (en) * | 2019-03-18 | 2020-09-23 | Toshiba Kk | A quantum random number generator |
| GB2582311B (en) * | 2019-03-18 | 2021-10-20 | Toshiba Kk | A quantum random number generator |
| US11709657B2 (en) | 2019-03-18 | 2023-07-25 | Kabushiki Kaisha Toshiba | High bandwidth quantum random number generator |
| CN110675716A (en) * | 2019-09-24 | 2020-01-10 | 华东师范大学 | All-fiber quantum state simulation device and method |
| CN110675716B (en) * | 2019-09-24 | 2021-06-25 | 华东师范大学 | An all-fiber quantum state simulation device and simulation method |
| CN114285574A (en) * | 2022-03-07 | 2022-04-05 | 南京大学 | Source-independent quantum random number generation method and system for resisting strong light blinding |
| CN114285574B (en) * | 2022-03-07 | 2022-06-21 | 南京大学 | A source-independent quantum random number generation method and system against blinding by strong light |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206348777U (en) | The unrelated quantum random number generator of one introduces a collection | |
| CN106209361B (en) | A secure star quantum key distribution network without trusted relays | |
| CN106161011A (en) | A kind of plug and play quantum key dissemination system based on coding time phase and method and transmitting terminal and receiving terminal | |
| CN104065475B (en) | High-speed and continuous variable quantum key distribution system and its position frame synchornization method | |
| CN104303449B (en) | It is a kind of by change at random their validity be used for detect control quantum cryptography device in single-photon detector attack device and method | |
| CN100592685C (en) | Quantum cipher communication system and method of setting average photon number at communication terminal | |
| EP2670642B1 (en) | Quantum key distribution | |
| CN206364813U (en) | A kind of measuring apparatus unrelated quantum key distribution system of PP structures | |
| CN106603161A (en) | QKD system sending terminal based on phase modulation light source, receiving terminal, QKD system and method thereof | |
| CN106130723A (en) | There is the quantum key distribution system of actively monitoring function | |
| CN106506154A (en) | A kind of QKD system and method based on COW agreements | |
| CN110324145A (en) | It is a kind of to polarize unrelated phase code quantum key distribution system and method | |
| CN105141376B (en) | A kind of method of real-time of CVQKD systems and its shot noise variance | |
| CN106648541B (en) | A kind of device and method generating true random number based on twin light beam | |
| CN113162767B (en) | Heterodyne measurement-based four-state quantum key distribution method and system | |
| CN107124227B (en) | CV-QKD system and transmitting terminal, receiving end and CV-QKD method based on light injection | |
| CN108989035A (en) | Based on the unrelated continuous variable quantum key delivering method of measuring device and system | |
| CN108075885A (en) | The high speed quantum key distribution system of phase-modulated polarized coding | |
| CN108540282A (en) | HD-QKD systems based on Polarization Modulation time encoding | |
| CN104641580A (en) | Visualization of an optical signal through linear optical sampling | |
| CN106254064B (en) | A Receiver Local Oscillator Optical Security Monitoring Method Applicable to Continuous Variable Quantum Key Distribution | |
| CN112491542A (en) | Local oscillator four-state continuous variable quantum key distribution method and system | |
| CN205961140U (en) | Plug -and -play quantum key distribution system and transmitting terminal and receiving terminal based on time phase coding | |
| CN112039671A (en) | Efficient quantum key distribution system and method | |
| CN108446099B (en) | Source-independent high-dimensional time-coded quantum random number generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |