Kar’s recent proof showing that a maximally entangled state of two spin-1/2 particles gives the largest violation of a Bell inequality is extended to N spin-1/2 particles (N ≥ 3). In particular, it is shown that all the states yielding a direct contradiction with the assumption of local realism do generally consist of a superposition of maximally entangled states. Recently, Kar (see Ref. [1], a...

In this paper we show a Clauser-Horne (CH) inequality for two three-level quantum systems or qutrits, alternative to the CH inequality given by Kaszlikowski et al. [Phys. Rev. A 65, 032118 (2002)]. In contrast to this latter CH inequality, the new one is shown to be equivalent to the ClauserHorne-Shimony-Holt (CHSH) inequality for two qutrits given by Collins et al. [Phys. Rev. Lett. 88, 040404...

Quantum coherence and quantum entanglement are two different manifestations of the superposition principle. In this article we show that right choice basis to be used estimate is separable basis. The estimated using Bell does not represent in system, since there a system due states. We first compute qubit mixed states prepared one from computational l1-norm coherence, measured concurrence mixed...

The inequalities of Bell, Clauser-Horne-Shimony-Holt (CHSH) and others are shown to be inconsistent with the Fundamental (Universal) Model probability theory when combined physics laws Malus-type. This combination permits modeling all results quantum related CHSH-Aspect-type experiments, while respecting Einstein’s separation principle.

We propose and analyze a protocol for observing violation of the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality using two spatially separated Bose-Einstein condensates (BECs). To prepare correlated state, spin-changing collisions are used to first two-mode squeezed BEC. This is then split into BECs by controlling spatial wave function, e.g., modifying trapping potential. Finally, also exploi...

Kar’s recent proof showing that a maximally entangled state of two spin-1/2 particles gives the largest violation of a Bell inequality is extended to N spin-1/2 particles (N ≥ 3). In particular, it is shown that all the states yielding a direct contradiction with the assumption of local realism do generally consist of a superposition of maximally entangled states. Recently, Kar (see Ref. [1], a...

Abstract A nonlocal circulator protocol is proposed in hybrid optomechanical system. By analogy with quantum communication, using the input-output relationship, we establish channel between two optical modes long-range. The three body interaction cavity and oscillators obtained by eliminating mode verifying Bell-CHSH inequality of continuous variables. introducing phase accumulation cyclic inte...

We investigate the complexity cost of demonstrating the key types of nonclassical correlations — Bell inequality violation, EPR-steering, and entanglement — with independent agents, theoretically and in a photonic experiment. We show that the complexity cost exhibits a hierarchy among these three tasks, mirroring the recently-discovered hierarchy for how robust they are to noise. For Bell inequ...

A proof of Bell's theorem without inequalities is given by suitably extending a proof of the Bell-Kochen-Specker theorem due to Mermin. This proof is generalized to obtain an inequality-free proof of Bell's theorem based on an entangled state of 2n qubits (with n odd) shared between two distant observers. A generalized CHSH inequality is formulated for 2n qubits and it is shown that quantum mec...

Separability is a concept that is very difficult to define, and yet much of our scientific method is implicitly based upon the assumption that systems can sensibly be reduced to a set of interacting components. This paper examines the notion of separability in the creation of bi-ambiguous compounds that is based upon the CHSH and CH inequalities. It reports results of an experiment showing that...