Distribution of Time-Bin Entangled Qubits over 50km of Optical Fiber
Abstract
We report experimental distribution of time-bin entangled qubits over 50km of optical fibers. Using actively stabilized preparation and measurement devices we demonstrate violation of the Clauser-Horne-Shimony-Holt 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 50km of optical fibers using entangled photon.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2004
- DOI:
- arXiv:
- arXiv:quant-ph/0404124
- Bibcode:
- 2004PhRvL..93r0502M
- Keywords:
-
- 03.67.Hk;
- 03.67.Dd;
- 42.65.Lm;
- 42.81.-i;
- Quantum communication;
- Quantum cryptography;
- Parametric down conversion and production of entangled photons;
- Fiber optics;
- Quantum Physics
- E-Print:
- 4 pages, 4 figures