Frequency-Domain Quantum Interference with Correlated Photons from an Integrated Microresonator
Frequency-Domain Quantum Interference with Correlated Photons from an Integrated Microresonator
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DOI：
10.1103/physrevlett.124.143601
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发表时间：
2020-04-06
影响因子：
8.6
通讯作者：
Gaeta, Alexander L.
中科院分区：
文献类型：
--
作者：
Joshi, Chaitali;Farsi, Alessandro;Gaeta, Alexander L.
量子信息的频率编码与光纤和集成光子技术一起可以显着降低实现全光子量子网络的复杂性和资源需求。单光子频域处理的关键挑战是在一定带宽范围内实现不同频率的量子光场之间的相干和选择性相互作用。在这里，我们报告频域Hong-Ou-Mandel干涉与基于芯片的微谐振器产生的光谱不同的光子。我们使用四波混频来实现有源“频率分束器”，并实现0.95 +/- 0.02的干涉频率。我们的工作建立了四波混频作为选择性高保真双光子操作的工具，在频域中，结合集成的单光子源，提供了一个构建模块的频率复用光子量子网络。
Frequency encoding of quantum information together with fiber and integrated photonic technologies can significantly reduce the complexity and resource requirements for realizing all-photonic quantum networks. The key challenge for such frequency domain processing of single photons is to realize coherent and selective interactions between quantum optical fields of different frequencies over a range of bandwidths. Here, we report frequency-domain Hong-Ou-Mandel interference with spectrally distinct photons generated from a chip-based microresonator. We use four-wave mixing to implement an active "frequency beam splitter" and achieve interference visibilities of 0.95 +/- 0.02. Our work establishes fourwave mixing as a tool for selective high-fidelity two-photon operations in the frequency domain which, combined with integrated single-photon sources, provides a building block for frequency-multiplexed photonic quantum networks.