In this paper, we demonstrate the generation of high-performance entangled photon-pairs in different degrees freedom from a single piece fiber pigtailed periodically poled LiNbO$_3$ (PPLN) waveguide. We utilize cascaded second-order nonlinear optical processes, i.e. second-harmonic (SHG) and spontaneous parametric down conversion (SPDC), to generate photon-pairs. Previously, performance photon ...

In this paper, we investigate the critical efficiency of detectors to observe Bell nonlocality using multiple copies maximally entangled two-qubit state carried by a single pair particles, such as hyperentangled states, and product Pauli measurements. It is known that in Clauser-Horne-Shimony-Holt (CHSH) test symmetric detection $82.84%$ can be tolerated for state. We beat enigmatic threshold e...

In a recent preprint James Owen Weatherall has attempted a simple local-deterministic model for the EPR-Bohm correlation and speculated about why his model fails when my counterexample to Bell’s theorem succeeds. Here I bring out the physical, mathematical, and conceptual reasons why his model fails. In particular, I demonstrate why no model based on a tensor representation of the rotation grou...

We will demonstrate in this paper that Bell′s theorem (Bell′s inequality) does not really conflict with quantum mechanics, the controversy between them originates from the different definitions for the expectation value using the probability distribution in Bell′s inequality and the expectation value in quantum mechanics. We can not use quantum mechanical expectation value measured in experimen...

Local realism is the idea that objects have de®nite properties whether or not they are measured, and that measurements of these properties are not affected by events taking place suf®ciently far away. Einstein, Podolsky and Rosen used these reasonable assumptions to conclude that quantum mechanics is incomplete. Starting in 1965, Bell and others constructed mathematical inequalities whereby exp...

We present a much simplified version of the Collins-Gisin-Linden-Massar-Popescu inequality for the 2x2xd Bell scenario. Numerical maximization of the violation of this inequality over all states and measurements suggests that the optimal state is far from maximally entangled, while the best measurements are the same as conjectured best measurements for the maximally entangled state. For very la...

Human memory experiments appear to be generating “nonlocal” effects (Nelson & McEvoy 2007b). In this paper the possibility that words might be entangled in human semantic space is seriously entertained. This approach leads to a very natural picture of the way in which context might affect word association via the standard interpretation of quantum measurement. Two possible scenarios for testing...

The relationship between the noncommutativity of operators and the violation of the Bell inequality is exhibited in the light of the n-particle Bell-type inequality discovered by Mermin [Phys. Rev. Lett. 65 (1990) 1838]. It is shown, in particular, that the maximal amount of violation of Mermin’s inequality predicted by quantum mechanics decreases exponentially by a factor of 2 whenever any m a...

The relationship between the noncommutativity of operators and the violation of the Bell inequality is exhibited in the light of the n-particle Bell-type inequality discovered by Mermin [Phys. Rev. Lett. 65 (1990) 1838]. It is shown, in particular, that the maximal amount of violation of Mermin’s inequality predicted by quantum mechanics decreases exponentially by a factor of 2 whenever any m a...