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

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

2010-01-28

arxiv.org/abs/1001.5234v1

Phys. Rev. Lett. 105, 140504 (2010)

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

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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