Realistic loophole-free Bell test with atom-photon entanglement
arXiv:1206.0074 · doi:10.1038/ncomms3104
Abstract
The establishment of nonlocal correlations, obtained through the violation of a Bell inequality, is not only important from a fundamental point of view, but constitutes the basis for device-independent quantum information technologies. Although several nonlocality tests have been performed so far, all of them suffered from either the locality or the detection loopholes. Recent studies have suggested that the use of atom-photon entanglement can lead to Bell inequality violations with moderate transmission and detection efficiencies. In this paper we propose an experimental setup realizing a simple atom-photon entangled state that, under realistic experimental parameters available to date, achieves a significant violation of the Clauser-Horn-Shimony-Holt inequality. Most importantly, the violation remains when considering typical detection efficiencies and losses due to required propagation distances.
21 pages, 5 figures, 3 table, to appear in Nature Comm
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- Violation of Bell-CHSH inequality using imperfect photodetectors with optical hybrid states
- Closing the detection loophole in tripartite Bell tests using the W state
- Proposal for a loophole-free Bell test based on spin-photon interactions in cavities
- Analysis of a proposal for a realistic loophole-free Bell test with atom-light entanglement
- Certified Randomness From Steering Using Sequential Measurements
- Detection Efficiency Bounds in (Semi-)Device-Independent Scenarios
- Loss-tolerant hybrid measurement test of CHSH inequality with weakly amplified N00N states