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arXiv 0901.2956quant-ph
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具有时间对称脉冲的同步量子存储器

Synchronous Quantum Memories with Time-symmetric Pulses

Q. Y. He, M. D. Reid, P. D. Drummond

摘要:

我们提出了一个动态的量子存储器的方法,使用同步振荡器腔模型,其中的耦合的形状在时间上提供一个对称的输入脉冲的最佳接口。这克服了在存储时间比输入信号持续时间长的情况下实现高量子输入-输出保真度的已知困难。我们的通用模型适用于任何线性存储介质,从超导设备到原子介质。我们表明,与耦合和/或失谐的时间调制,它是可能的模式匹配的时间对称脉冲,具有相同的脉冲形状的输入和输出。

英文摘要:

We propose a dynamical approach to quantum memories using a synchronous oscillator-cavity model, in which the coupling is shaped in time to provide the optimum interface to a symmetric input pulse. This overcomes the known difficulties of achieving high quantum input-output fidelity with storage times long compared to the input signal duration. Our generic model is applicable to any linear storage medium ranging from a superconducting device to an atomic medium. We show that with temporal modulation of coupling and/or detuning, it is possible to mode-match to time-symmetric pulses that have identical pulse shapes on input and output.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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