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Phase noise measurements in long fiber interferometers for quantum repeaters applications
Jiří Minář, Hugues de Riedmatten, Christoph Simon +2
Many protocols for long distance quantum communication require interferometric phase stability over long distances of optical fibers. In this paper we investigate the phase noise i…
Partial list of bipartite Bell inequalities with four binary settings
Nicolas Brunner, Nicolas Gisin
We give a partial list of 26 tight Bell inequalities for the case where Alice and Bob choose among four two-outcome measurements. All tight Bell inequalities with less settings are…
High coherence photon pair source for quantum communication
Matthaeus Halder, Alexios Beveratos, Rob T Thew +3
This paper reports a novel single mode source of narrow-band entangled photon pairs at telecom wavelengths under continuous wave excitation, based on parametric down conversion. Fo…
Interference of Spontaneous Emission of Light from two Solid-State Atomic Ensembles
M. Afzelius, M. U. Staudt, H. de. Riedmatten +6
We report an interference experiment of spontaneous emission of light from two distant solid-state ensembles of atoms that are coherently excited by a short laser pulse. The ensemb…
Experimental Falsification of Leggett's Non-Local Variable Model
Cyril Branciard, Alexander Ling, Nicolas Gisin +3
Bell's theorem guarantees that no model based on local variables can reproduce quantum correlations. Also some models based on non-local variables, if subject to apparently "reason…
Long-Distance Entanglement Distribution with Single-Photon Sources
Nicolas Sangouard, Christoph Simon, Jiri Minar +3
We present an efficient architecture for quantum repeaters based on single-photon sources in combination with quantum memories for photons. Errors inherent to previous repeater pro…