非线性纳米光子学实现的单光子可调谐量子拍频
Tunable quantum beat of single photons enabled by nonlinear nanophotonics.
作者信息
Li Qing, Singh Anshuman, Lu Xiyuan, Lawall John, Verma Varun, Mirin Richard, Nam Sae Woo, Srinivasan Kartik
机构信息
Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
Institute for Research in Electronics and Applied Physics and Maryland Nanocenter, University of Maryland, College Park, MD 20742, USA.
出版信息
Phys Rev Appl. 2019;12(5). doi: https://doi.org/10.1103/physrevapplied.12.054054.
We demonstrate the tunable quantum beat of single photons through the co-development of core nonlinear nanophotonic technologies for frequency-domain manipulation of quantum states in a common physical platform. Spontaneous four-wave mixing in a nonlinear resonator is used to produce non-degenerate, quantum-correlated photon pairs. One photon from each pair is then frequency shifted, without degradation of photon statistics, using four-wave mixing Bragg scattering in a second nonlinear resonator. Fine tuning of the applied frequency shift enables tunable quantum interference of the two photons as they are impinged on a beamsplitter, with an oscillating signature that depends on their frequency difference. Our work showcases the potential of nonlinear nanophotonic devices as a valuable resource for photonic quantum information science.
通过在一个通用物理平台上共同开发用于量子态频域操纵的核心非线性纳米光子技术，我们展示了单光子的可调谐量子拍频。非线性谐振器中的自发四波混频用于产生非简并的、量子关联的光子对。然后，利用第二个非线性谐振器中的四波混频布拉格散射，对每对光子中的一个进行频移，而不会降低光子统计特性。对所施加频移的精细调谐能够使这两个光子在入射到分束器时产生可调谐的量子干涉，其振荡特征取决于它们的频率差。我们的工作展示了非线性纳米光子器件作为光子量子信息科学宝贵资源的潜力。
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