Bell inequalities violation within non-Bunch–Davies states
نویسندگان
چکیده
منابع مشابه
Asymptotic violation of Bell inequalities and distillability.
A multipartite quantum state violates a Bell inequality asymptotically if, after jointly processing by general local operations an arbitrarily large number of copies of it, the result violates the inequality. In the bipartite case we show that asymptotic violation of the Clauser-Horne-Shimony-Holt inequality is equivalent to distillability. Hence, bound entangled states do not violate it. In th...
متن کاملViolation of Bell inequalities for beables
Violation of Bell inequalities for beables is well-known to be possible because of what has become known as the “conspiracy” loophole, but this route to a beables model is properly discounted as implausible, essentially because it requires correlations between instrument settings and hidden beables. This paper identifies a further loophole, called here the “correlation” loophole, which is more ...
متن کاملBell inequalities for graph states.
We investigate the nonlocal properties of graph states. To this aim, we derive a family of Bell inequalities which require three measurement settings for each party and are maximally violated by graph states. In turn, for each graph state there is an inequality maximally violated only by that state. We show that for certain types of graph states the violation of these inequalities increases exp...
متن کاملBell violation for unknown continuous-variable states
We describe a new Bell test for two-particle entangled systems that engages an unbounded continuous variable. The continuous variable state is allowed to be arbitrary and inaccessible to direct measurements. A systematic method is introduced to perform the required measurements indirectly. Our results provide new perspectives on both the study of local realistic theory for continuousvariable sy...
متن کاملBipartite bell inequalities for hyperentangled states.
We show that bipartite Bell inequalities based on the Einstein-Podolsky-Rosen criterion for elements of reality and derived from the properties of some hyperentangled states allow feasible experimental verification of the fact that quantum nonlocality grows exponentially with the size of the subsystems, and Bell loophole-free tests with currently available photodetection efficiencies.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters B
سال: 2018
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2018.10.020