Distribution of time-bin qubits over 50 km of optical fiber

Details Distribution of time-bin qubits over 50 km of optical fiber Distribution of time-bin qubits over 50 km of optical fiber

2004-04-21

arxiv.org/abs/quant-ph/0404124v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.93.180502

We report experimental distribution of time-bin entangled qubits over 50 km of optical fibers. Using actively stabilized preparation and measurement devices we demonstrate violation of the CHSH Bell inequality by more than 15 standard deviations without removing the detector noise. In addition we report a proof of principle experiment of quantum key distribution over 50 km of optical fibers using entangled photon.

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