利用量子Zeno效应克服线性光量子信息处理器中的光子损失
Exploiting the quantum Zeno effect to beat photon loss in linear optical quantum information processors
摘要：
我们设计了一种新的技术来增强量子信息通过线性光学量子信息处理器的传输。这个想法是基于将量子芝诺效应应用于光子吸收过程。通过QND（量子非破坏）测量频繁监测光子的存在，抑制了吸收。量子信息被编码在偏振自由度中，因此不受测量的影响。提出了QND测量的一些实现方案。
英文摘要：
We devise a new technique to enhance transmission of quantum information through linear optical quantum information processors. The idea is based on applying the Quantum Zeno effect to the process of photon absorption. By frequently monitoring the presence of the photon through a QND (quantum non-demolition) measurement the absorption is suppressed. Quantum information is encoded in the polarization degrees of freedom and is therefore not affected by the measurement. Some implementations of the QND measurement are proposed.
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