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arXiv 1602.07047physics.opticsquant-ph
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集成光子学中色散使能的量子态控制

Dispersion-enabled quantum state control in integrated photonics

Ryan P. Marchildon, Amr S. Helmy

摘要:

集成光学为量子光子电路带来了前所未有的稳定性和性能。然而,集成器件不仅仅是其体光学对应物的微米级等效物。通过利用集成设置的固有色散特性,这样的器件可以在量子线路架构中发挥更加通用的作用。我们通过研究普通定向耦合器中线性色散的影响来证明这一点。色散解锁了该设备的几个新功能,包括原位控制光子光谱和偏振纠缠,可调光子时间排序,和纠缠敏感的双光子符合产生。还揭示了在调整干涉可见度的同时保持完美的双光子反聚结的能力,这在体光学中是没有的。这项工作的结果增加了一套状态工程和表征工具,受益于集成的优势。它还为重新评估其他片上器件中色散提供的可能性铺平了道路。

英文摘要:

Integrated optics has brought unprecedented levels of stability and performance to quantum photonic circuits. However, integrated devices are not merely micron-scale equivalents of their bulk-optics counterparts. By exploiting the inherently dispersive characteristics of the integrated setting, such devices can play a remarkably more versatile role in quantum circuit architectures. We show this by examining the implications of linear dispersion in an ordinary directional coupler. Dispersion unlocks several novel capabilities for this device, including in-situ control over photon spectral and polarization entanglement, tunable photon time-ordering, and entanglement-sensitive two-photon coincidence generation. Also revealed is an ability to maintain perfect two-photon anti-coalescence while tuning the interference visibility, which has no equivalent in bulk-optics. The outcome of this work adds to a suite of state engineering and characterization tools that benefit from the advantages of integration. It also paves the way for re-evaluating the possibilities offered by dispersion in other on-chip devices.

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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