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arXiv 1004.2469quant-ph
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阻抗匹配腔量子存储器

Impedance-matched cavity quantum memory

Mikael Afzelius, Christoph Simon

摘要:

本文研究了非对称光腔中基于原子频率梳的量子存储器。在这种配置中,可以在有效光学深度为1的系统中完全吸收输入光,只要每个腔往返行程的吸收与耦合镜的透射精确匹配(“阻抗匹配“)。我们表明,阻抗匹配的结果在读出效率仅限于不可逆的原子退相,其效果可以在系统中具有很大的非均匀加宽非常小。我们的提议开辟了一条通往量子存储器的有吸引力的路线,其效率接近单位。

英文摘要:

We consider an atomic frequency comb based quantum memory inside an asymmetric optical cavity. In this configuration it is possible to absorb the input light completely in a system with an effective optical depth of one, provided that the absorption per cavity round trip exactly matches the transmission of the coupling mirror ("impedance matching"). We show that the impedance matching results in a readout efficiency only limited by irreversible atomic dephasing, whose effect can be made very small in systems with large inhomogeneous broadening. Our proposal opens up an attractive route towards quantum memories with close to unit efficiency.

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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