0912.4433 (G. B. Xavier et al.)

Active polarization control for quantum communication in long-distance
optical fibers with shared telecom traffic    [PDF]

G. B. Xavier, G. Vilela de Faria, T. Ferreira da Silva, G. P. Temporao, J. P. von der Weid

We experimentally demonstrate the compatibility of wavelength multiplexed active polarization stabilization for quantum communication in an optical fiber carrying telecom traffic. One of the feedback control channels contains a 9.953 Gb/s data stream generated from a BER meter. We verify the ability to transmit single-photons in the two opposite directions of a 23 km optical fiber spool, while maintaining their state of polarization stable and a classical BER in the feedback channel error-free, during 6 hours of continuous operation.

View original: http://arxiv.org/abs/0912.4433