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首页> 外文期刊>Optics Letters >No free lunch: the trade-off between heralding rate and efficiency in microresonator-based heralded single photon sources
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No free lunch: the trade-off between heralding rate and efficiency in microresonator-based heralded single photon sources

机译：没有免费的午餐：基于微谐振器的预热单光子源的预热率与效率之间的权衡

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摘要

Generation of heralded single photons has recently been demonstrated using spontaneous four-wave mixing in integrated microresonators. While the results of coincidence measurements on the generated photon pairs from these systems show promise for their utility in heralding applications, such measurements do not reveal all of the effects of photon losses within the resonator. These effects, which include a significant degradation of the heralding efficiency, depend strongly on the relative strengths of the coupling of the ring modes to loss modes and channel modes. We show that the common choice of critical coupling neither optimizes the rate of successfully heralded photons nor coincidences and derives the coupling conditions needed to do so. Optimizing these rates has a considerable negative effect on the heralding efficiency. (C) 2016 Optical Society of America
机译：最近已经在集成微谐振器中使用自发四波混频演示了预示单光子的生成。虽然从这些系统生成的光子对的重合测量结果显示了其在先驱应用中的应用前景，但此类测量并未揭示谐振器内光子损耗的所有影响。这些影响，包括预示效率的显着降低，在很大程度上取决于环形模式与损耗模式和通道模式的耦合的相对强度。我们表明，临界耦合的常见选择既不会优化成功预示光子的速率也不会优化巧合，也不会得出这样做所需的耦合条件。优化这些速率对放牧效率有相当大的负面影响。 （C）2016美国眼镜学会

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