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One-particle and two-particle visibilities in bipartite entangled Gaussian states by Georgiev, Danko; Bello, Leon; Carmi, Avishy; Cohen, Eliahu is a scholarly article available to read on EtoBox.

What is One-particle and two-particle visibilities in bipartite entangled Gaussian states about?

Complementarity between one- and two-particle visibility in discrete systems can be extended to bipartite quantum-entangled Gaussian states. The meaning of the two-particle visibility originally defined by Jaeger, Horne, Shimony, and Vaidman with the use of an indirect method that first corrects the two-particle probability distribution by adding and subtracting other distributions with varying degree of entanglement, however, deserves further analysis. Furthermore, the origin of complementarity between one-particle visibility and two-particle visibility is somewhat elusive and it is not entirely clear what is the best way to associate particular two-particle quantum observables with the two-particle visibility. Here, we develop a direct method for quantifying the two-particle visibility based on measurement of a pair of two-particle observables that are compatible with the measured pair of single-particle observables. For each of the two-particle observables the corresponding visibility is computed, after which the absolute difference of the latter pair of visibilities is considered as a redefinition of the two-particle visibility. Our approach reveals a mathematical symmetry as i

Author

Georgiev, Danko; Bello, Leon; Carmi, Avishy; Cohen, Eliahu

Published

2020

Language

EN