Nonlocality activation in entanglement-swapping chains
Physical Review A—Atomic, Molecular, and Optical Physics, 2012•APS
We consider multiple entanglement swappings performed on a chain of bipartite states.
Each state does not violate Clauser-Horne-Shimony-Holt (CHSH) inequality. We show that
before some critical number of entanglement swappings is achieved the output state does
not violate this inequality either. However, if this number is achieved, then for some results of
Bell measurements obtained in the protocol of entanglement swapping the output state
violates CHSH inequality. Moreover, we show that for different states we have different …
Each state does not violate Clauser-Horne-Shimony-Holt (CHSH) inequality. We show that
before some critical number of entanglement swappings is achieved the output state does
not violate this inequality either. However, if this number is achieved, then for some results of
Bell measurements obtained in the protocol of entanglement swapping the output state
violates CHSH inequality. Moreover, we show that for different states we have different …
We consider multiple entanglement swappings performed on a chain of bipartite states. Each state does not violate Clauser-Horne-Shimony-Holt (CHSH) inequality. We show that before some critical number of entanglement swappings is achieved the output state does not violate this inequality either. However, if this number is achieved, then for some results of Bell measurements obtained in the protocol of entanglement swapping the output state violates CHSH inequality. Moreover, we show that for different states we have different critical numbers for which CHSH inequality is activated.
American Physical Society