Loophole-free test of the Bell inequality

Proposal for a loophole-free test of the Bell inequalities.

A proposal for an experimental realization of Bohm s spin-2 particle version of the Einstein-Podolsky-Rosen experiment is described. Two ' Hg atoms, each with nuclear spin 2, are produced in an entangled state with total nuclear spin zero. Such a state is obtained by dissociation of dimers of the ' Hg2 isotopomer using a spectroscopically selective stimulated Raman process. The measurement of n...

Proposal for a loophole-free Bell test using homodyne detection.

We propose a feasible optical setup allowing for a loophole-free Bell test with efficient homodyne detection. A non-Gaussian entangled state is generated from a two-mode squeezed vacuum by subtracting a single photon from each mode, using beam splitters and standard low-efficiency single-photon detectors. A Bell violation exceeding 1% is achievable with 6 dB squeezed light and a homodyne effici...

Bell-inequality violation with entangled photons, free of the coincidence-time loophole

Bell inequality and the locality loophole: Active versus passive switches

All experimental tests of the violation of Bell’s inequality suffer from some loopholes. We show that the locality loophole is not independent of the detection loophole: in experiments using low efficient detectors, the locality loophole can be closed equivalently using active or passive switches.

Proposal for a Loophole-Free Bell Test with Electron Spins of Donors in Silicon

So far, all experimental tests of Bell inequalities which must be satisfied by all local realistic hidden-variable theories and are violated by quantum mechanical predictions have left at least one loophole open. We propose a feasible setup allowing for a loophole-free test of the Bell inequalities. Two electron spin qubits of donorsP in a nanoscale silicon host in different cavities 300 m apar...