Distribution of time-bin qubits over 50 km of optical fiber
I. Marcikic, H. de Riedmatten, W. Tittel, H. Zbinden, M. Legre, N. Gisin
Abstract
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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