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|Title:||Large violation of Bell inequalities using both particle and wave measurements|
|Authors:||Cavalcanti, D. |
|Citation:||Cavalcanti, D., Brunner, N., Skrzypczyk, P., Salles, A., Scarani, V. (2011-08-08). Large violation of Bell inequalities using both particle and wave measurements. Physical Review A - Atomic, Molecular, and Optical Physics 84 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.84.022105|
|Abstract:||When separated measurements on entangled quantum systems are performed, the theory predicts correlations that cannot be explained by any classical mechanism: communication is excluded because the signal should travel faster than light; preestablished agreement is excluded because Bell inequalities are violated. All optical demonstrations of such violations have involved discrete degrees of freedom and are plagued by the detection-efficiency loophole. A promising alternative is to use continuous variables combined with highly efficient homodyne measurements. However, all the schemes proposed so far use states or measurements that are extremely difficult to achieve, or they produce very weak violations. We present a simple method to generate large violations for feasible states using both photon counting and homodyne detections. The present scheme can also be used to obtain nonlocality from easy-to-prepare Gaussian states (e.g., two-mode squeezed state). © 2011 American Physical Society.|
|Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics|
|Appears in Collections:||Staff Publications|
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