We propose a possible scheme for generating the maximally entangled mixed state of two atoms symmetrically coupled to a single mode optical cavity field. It is shown that two atoms can not achieve the maximally entangled mixed state in the resonant case. Moreover, they can not violate the Bell-CHSH inequality in the resonant case. In the off-resonant case, the reduced density matrix of two atom...

The Bell inequalities stand at the cornerstone of developments quantum theory on both foundational and applied side. discussion started as a way to test whether description reality is complete or not, but it developed in such that new research area stemmed from it, namely information. Far being exhausted topic, this paper, we present constructive geometrically intuitive local polytope its facet...

We emphasize the difficulties of an experiment that can definitely discriminate between local realistic hidden variables theories and quantum mechanics using the Bell CHSH inequalities and a real measurement apparatus. In particular we analyze some examples in which the noise in real instruments can alter the experimental results, and the nontrivial problem to find a real “fair sample” of parti...

Submitted for the MAR14 Meeting of The American Physical Society Avoiding Loopholes with Hybrid Bell-Leggett-Garg Inequalities JUSTIN DRESSEL, ALEXANDER KOROTKOV, Univ of California Riverside — By combining the postulates of macrorealism with Bell-locality, we derive a qualitatively different hybrid inequality that avoids two loopholes that commonly appear in Leggett-Garg and Bell inequalities....

This thesis describes the development of a free-space quantum key distribution system which has the ability to provide unconditionally secure communication between two parties: Alice and Bob. The system exploits the quantum mechanical property of entanglement in order to generate a key. Security is then guaranteed by the No-Cloning theorem and the laws of quantum mechanics which prevent a quant...

– Bell’s inequalities are a variant of Boole’s legendary consistency “conditions of possible experience.” Although they do not specifically refer to spatially separated subsystems, they apply to spatially separated particles as well. Such an interpretation appears to be immune to arguments involving time dependencies put forward recently by Hess and Philipp [1]. In the middle of the 19th centur...

Non-local boxes are hypothetical “machines” that give rise to superstrong non-local correlations, leading to a stronger violation of Bell/CHSH inequalities than is possible within the framework of quantum mechanics. We show how non-local boxes can be used to perform any two-party secure computation. We first construct a protocol for bit commitment and then show how to achieve oblivious transfer...