arXiv quant-ph/06101492006-10-18quant-ph

独立囚禁原子发射的两个单光子之间的量子干涉

Quantum interference between two single photons emitted by independently trapped atoms

Jerome Beugnon, Matthew Jones, Jos Dingjan, Benoit Darquié, Gaetan Messin, Antoine Browaeys, Philippe Grangier

发表信息：: Nature 440 (06/04/2006) 779
DOI：: 10.1038/nature04628

摘要：

当两个不可区分的单光子被馈送到分束器的两个输入端口时，光子将合并并一起从同一输出端口离开。这是量子干涉效应，其发生是因为光子在不同输出端口离开的两个可能路径相消干涉。这种效应首先由Hong，Ou和Mandel在参数下转换中观察到，然后由同一个量子发射体一个接一个地产生单光子。随着量子信息的发展，这种聚并效应作为利用线性光学技术进行量子数据处理的一种资源受到了广泛的关注。为了确保基于这些想法的方案的可扩展性，至关重要的是，不可区分的光子是由一组同步但独立的光源发射的。在本文中，我们证明了量子干涉的两个单光子发射的两个独立的囚禁单原子，弥合差距，同时发射许多不可区分的单光子由不同的发射。我们的数据分析表明，观测到的聚并主要受到两个原子发射的光的波前匹配的限制，并且在较小程度上受到每个原子在其自身陷阱中的运动的限制。

英文摘要：

When two indistinguishable single photons are fed into the two input ports of a beam splitter, the photons will coalesce and leave together from the same output port. This is a quantum interference effect, which occurs because the two possible paths where the photons leave in different output ports interfere destructively. This effect was first observed in parametric downconversion by Hong, Ou and Mandel, and then with single photons produced one after the other by the same quantum emitter. With the recent development of quantum information, a lot of attention has been devoted to this coalescence effect as a resource for quantum data processing using linear optics techniques. To ensure the scalability of schemes based on these ideas, it is crucial that indistinguishable photons are emitted by a collection of synchronized, but otherwise independent sources. In this paper, we demonstrate the quantum interference of two single photons emitted by two independently trapped single atoms, bridging the gap towards the simultaneous emission of many indistinguishable single photons by different emitters. Our data analysis shows that the coalescence observed is mostly limited by the wavefront matching of the light emitted by the two atoms, and to a lesser extent by the motion of each atom in its own trap.

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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