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Compensating the Noise of a Communication Channel via Asymmetric Encoding of Quantum Information

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arxiv 1001.5234 v1 pith:SZZC7E2H submitted 2010-01-28 quant-ph

Compensating the Noise of a Communication Channel via Asymmetric Encoding of Quantum Information

classification quant-ph
keywords channelquantumasymmetricnoisecommunicationinformationprotocolactively
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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An asymmetric preparation of the quantum states sent through a noisy channel can enable a new way to monitor and actively compensate the channel noise. The paradigm of such an asymmetric treatment of quantum information is the Bennett 1992 protocol, in which the ratio between conclusive and inconclusive counts is in direct connection with the channel noise. Using this protocol as a guiding example, we show how to correct the phase drift of a communication channel without using reference pulses, interruptions of the quantum transmission or public data exchanges.

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