Strong violations of Bell-type inequalities for path-entangled number states

Strong violations of Bell-type inequalities for Werner-like states

We investigate the violation of Bell-type inequalities for two-qubit Werner-like states parametrized by the positive parameter 0 p 1. We use an unbalanced homodyne detection scheme to obtain the quantum mechanical probabilities. A violation of the Bell-Wigner and Janssens inequalities is obtained for a large range of the parameter p. The range given by these inequalities is greater than the one...

Observing Entanglement: Violations of Bell Inequalities

Bell 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...

Bell–inequalities for Entangled Pairs of Neutral Kaons

We extend the use of Bell–inequalities to Φ → K0K̄0 decays by exploiting analogies and differences to the well–known and experimentally verified singlet– spin case. Contrasting with other analyses, our Bell–inequalities are violated by quantum mechanics and can strictly be derived from local realistic theories. In principle, quantum mechanics could then be tested using unstable, oscillating stat...

Entangled-state generation and Bell inequality violations in nanomechanical resonators

J. Robert Johansson,1 Neill Lambert,2 Imran Mahboob,3 Hiroshi Yamaguchi,3 and Franco Nori2,4 1iTHES Research Group, RIKEN, Saitama 351-0198, Japan 2CEMS, RIKEN, Saitama 351-0198, Japan 3NTT Basic Research Laboratories, Nippon Telegraph and Telephone Corporation, Atsugi 243-0198, Japan 4Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA (Received 4 March 2014; revised man...