Quantum Communication and Quantum Networking. First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009, Revised Selected Papers

Research Article

Two-Way Quantum Communication in a Single Optical Fiber with Active Polarization Compensation

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  • @INPROCEEDINGS{10.1007/978-3-642-11731-2_16,
        author={G. Xavier and G. Faria and T. Silva and G. Tempor\"{a}o and J. Weid},
        title={Two-Way Quantum Communication in a Single Optical Fiber with Active Polarization Compensation},
        proceedings={Quantum Communication and Quantum Networking. First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009, Revised Selected Papers},
        proceedings_a={QUANTUMCOMM},
        year={2012},
        month={10},
        keywords={Quantum communications Polarization Optical networks},
        doi={10.1007/978-3-642-11731-2_16}
    }
    
  • G. Xavier
    G. Faria
    T. Silva
    G. Temporão
    J. Weid
    Year: 2012
    Two-Way Quantum Communication in a Single Optical Fiber with Active Polarization Compensation
    QUANTUMCOMM
    Springer
    DOI: 10.1007/978-3-642-11731-2_16
G. Xavier1,*, G. Faria1,*, T. Silva,*, G. Temporão1,*, J. Weid1,*
  • 1: Pontifical Catholic University of Rio de Janeiro
*Contact email: guix@opto.cetuc.puc-rio.br, gian@opto.cetuc.puc-rio.br, thiago@opto.cetuc.puc-rio.br, temporao@opto.cetuc.puc-rio.br, vdweid@opto.cetuc.puc-rio.br

Abstract

We experimentally demonstrate a two-way stable transmission of polarization encoded qubits over 23 km of spooled dispersion-shifted fiber with active polarization control in both directions, while simultaneously exchanging classical data. Two classical reference channels (one containing a telecom 10 Gb/s data stream), wavelength-multiplexed with the quantum signal, are used as feedback. The feasibility of quantum communication is demonstrated in the two opposite directions over 6 hours of continuous operation, as well as a classical error rate better than 1.0 x 10.