Distributed Ledger Technology (DLT) is a shared, synchronized and replicated data spread spatiall... more Distributed Ledger Technology (DLT) is a shared, synchronized and replicated data spread spatially and temporally with no centralized administration and/or storage. Each node has a complete and identical set of records. All participants contribute to building and maintaining the distributed ledger. Current DLT technologies fall into two broad categories. Those that use block-chains such as in Bitcoin or Ethereum, and newer approaches which reduce computational loads for verification. All current approaches though difficult to crack can be vulnerable to quantum algorithms using Quantum Information Technologies (QIT). This effort joins the 2 technologies, constructing a Quantum Distributed Ledger (QDL) which provides a higher level of security using QIT and a decentralized data depository using DLT. This enhanced security prevents middleman attacks with quantum computers yet retains the advantages of a decentralized ledger of data.
L'invention porte sur un systeme de synchronisation quantique pour un systeme de calcul distr... more L'invention porte sur un systeme de synchronisation quantique pour un systeme de calcul distribue classique. Des liaisons d'Einstein-Podolsky-Rosen sont etablies produisant des photons intriques pour assurer la synchronisation quantique. Dans un mode de realisation, le systeme comprend une pompe d'oscillateur laser, un element d'abaissement de frequence parametrique spontane couple a la pompe d'oscillateur laser, l'element d'abaissement de frequence parametrique spontane ayant une premiere sortie optique et une seconde sortie optique, un premier photodetecteur couple a la premiere sortie optique, une premiere horloge couplee au premier photodetecteur, un second photodetecteur couple a la seconde sortie optique par une liaison optique, et une seconde horloge couplee au second photodetecteur.
The Journal of the Acoustical Society of America, 1994
The parabolic equation (PE) acoustic model uses a Fourier spectral method of solving a second-ord... more The parabolic equation (PE) acoustic model uses a Fourier spectral method of solving a second-order differential equation. The solution is ‘‘evolved’’ by solving a series of fast Fourier transforms whereby the source is convolved with the environment of the propagating energy. Each convolution marks a step of the march until the solution is marched out to the final range. This evolution has been described mathematically many times in previous published papers [Hardin and Tappert, SIAM Rev. 15, 423 (1973), Thomson and Chapman, J. Acoust. Soc. Am. 74, 1848–1854 (1983)]. A graphical evolution of the convolution of the source with the environment is important in providing a fresh perpective and further insight into the refinement and the understanding of the source function and the sensitivity to the reference sound speed. In addition, the observation of the geometry as it marches the propagation forward in wave space is an important graphic tool for understanding the analytical descrip...
The Journal of the Acoustical Society of America, 1997
Acoustic arrays are expensive to deploy and require a multidisciplinary team of scientists and en... more Acoustic arrays are expensive to deploy and require a multidisciplinary team of scientists and engineers to develop, deploy, and monitor. This paper addresses one particular effort developed as a commercial software package, the Underwater Acoustic Analysis Tool (UWAA) by CST Images. UWAA is an acoustic array analysis tool for pre- and post-deployment modeling and analysis. Typically, the modeling of acoustic arrays and their deployment has been developed as separate and fractured modeling efforts. The array laydown modeling was separate from the acoustic beam formation and the propagation modeling. In addition to integrating all the components necessary to deploy an acoustic array, this effort describes the capability to compute the modeling in a parallel multithreaded environment using attached array processors. UWAA has integrated the modeling of the 3-D sensor positioning and sensor response, 3-D beam formation, 3-D acoustic modeling, and complex acoustic array interaction for b...
Distributed Ledger Technology (DLT) is a shared, synchronized and replicated data spread spatiall... more Distributed Ledger Technology (DLT) is a shared, synchronized and replicated data spread spatially and temporally with no centralized administration and/or storage. Each node has a complete and identical set of records. All participants contribute to building and maintaining the distributed ledger. Current DLT technologies fall into two broad categories. Those that use block-chains such as in Bitcoin or Ethereum, and newer approaches which reduce computational loads for verification. All current approaches though difficult to crack can be vulnerable to quantum algorithms using Quantum Information Technologies (QIT). This effort joins the 2 technologies, constructing a Quantum Distributed Ledger (QDL) which provides a higher level of security using QIT and a decentralized data depository using DLT. This enhanced security prevents middleman attacks with quantum computers yet retains the advantages of a decentralized ledger of data.
L'invention porte sur un systeme de synchronisation quantique pour un systeme de calcul distr... more L'invention porte sur un systeme de synchronisation quantique pour un systeme de calcul distribue classique. Des liaisons d'Einstein-Podolsky-Rosen sont etablies produisant des photons intriques pour assurer la synchronisation quantique. Dans un mode de realisation, le systeme comprend une pompe d'oscillateur laser, un element d'abaissement de frequence parametrique spontane couple a la pompe d'oscillateur laser, l'element d'abaissement de frequence parametrique spontane ayant une premiere sortie optique et une seconde sortie optique, un premier photodetecteur couple a la premiere sortie optique, une premiere horloge couplee au premier photodetecteur, un second photodetecteur couple a la seconde sortie optique par une liaison optique, et une seconde horloge couplee au second photodetecteur.
The Journal of the Acoustical Society of America, 1994
The parabolic equation (PE) acoustic model uses a Fourier spectral method of solving a second-ord... more The parabolic equation (PE) acoustic model uses a Fourier spectral method of solving a second-order differential equation. The solution is ‘‘evolved’’ by solving a series of fast Fourier transforms whereby the source is convolved with the environment of the propagating energy. Each convolution marks a step of the march until the solution is marched out to the final range. This evolution has been described mathematically many times in previous published papers [Hardin and Tappert, SIAM Rev. 15, 423 (1973), Thomson and Chapman, J. Acoust. Soc. Am. 74, 1848–1854 (1983)]. A graphical evolution of the convolution of the source with the environment is important in providing a fresh perpective and further insight into the refinement and the understanding of the source function and the sensitivity to the reference sound speed. In addition, the observation of the geometry as it marches the propagation forward in wave space is an important graphic tool for understanding the analytical descrip...
The Journal of the Acoustical Society of America, 1997
Acoustic arrays are expensive to deploy and require a multidisciplinary team of scientists and en... more Acoustic arrays are expensive to deploy and require a multidisciplinary team of scientists and engineers to develop, deploy, and monitor. This paper addresses one particular effort developed as a commercial software package, the Underwater Acoustic Analysis Tool (UWAA) by CST Images. UWAA is an acoustic array analysis tool for pre- and post-deployment modeling and analysis. Typically, the modeling of acoustic arrays and their deployment has been developed as separate and fractured modeling efforts. The array laydown modeling was separate from the acoustic beam formation and the propagation modeling. In addition to integrating all the components necessary to deploy an acoustic array, this effort describes the capability to compute the modeling in a parallel multithreaded environment using attached array processors. UWAA has integrated the modeling of the 3-D sensor positioning and sensor response, 3-D beam formation, 3-D acoustic modeling, and complex acoustic array interaction for b...
Uploads
Papers by Nils Paz