期刊
JOURNAL OF MODERN OPTICS
卷 57, 期 19, 页码 1965-1971出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500340.2010.499047
关键词
quantum optics; quantum information; quantum communication; continuous variables
类别
资金
- DFG in Germany
We demonstrate that continuous-variable quantum error correction based on Gaussian ancilla states and Gaussian operations (for encoding, syndrome extraction, and recovery) can be very useful to suppress the effect of non-Gaussian error channels. For a certain class of stochastic error models, reminiscent of those typically considered in the qubit case, quantum error correction codes designed for single-channel errors may enhance the transfer fidelities even when errors occur in every channel employed for transmitting the encoded state. In fact, in this case, the error-correcting capability of the continuous-variable scheme turns out to be higher than that of its discrete-variable analogues.
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