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

I. Marcikic; H. de Riedmatten; W. Tittel; H. Zbinden; M. Legre; N. Gisin

doi:10.1103/PhysRevLett.93.180502

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

Quantum Physics 2009-11-10 v1

Authors: I. Marcikic , H. de Riedmatten , W. Tittel , H. Zbinden , M. Legre , N. Gisin

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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.

Keywords

time-bin qubits optical fiber bell inequality quantum key distribution entangled photons

Cite

@article{arxiv.quant-ph/0404124,
  title  = {Distribution of time-bin qubits over 50 km of optical fiber},
  author = {I. Marcikic and H. de Riedmatten and W. Tittel and H. Zbinden and M. Legre and N. Gisin},
  journal= {arXiv preprint arXiv:quant-ph/0404124},
  year   = {2009}
}

Comments

4 pages, 4 figures

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