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  • Title: Full polarization control for fiber optical quantum communication systems using polarization encoding.
    Author: Xavier GB, Vilela de Faria G, Temporão GP, von der Weid JP.
    Journal: Opt Express; 2008 Feb 04; 16(3):1867-73. PubMed ID: 18542265.
    Abstract:
    A real-time polarization control system employing two non-orthogonal reference signals multiplexed in either time or wavelength with the data signal is presented. It is shown, theoretically and experimentally, that complete control of multiple polarization states can be attained employing polarization controllers in closed-loop configuration. Experimental results on the wavelength multiplexing setup show that negligible added penalties, corresponding to an average added optical Quantum Bit Error Rate of 0.044%, can be achieved with response times smaller than 10 ms, without significant introduction of noise counts in the quantum channel.
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