Near-Unity Indistinguishability Single Photon Source for Large-Scale Integrated Quantum Optics
Near-Unity Indistinguishability Single Photon Source for Large-Scale Integrated Quantum Optics
复制标题
用于大规模集成量子光学的近全同不可区分单光子源
DOI：
10.1103/physrevlett.122.173602
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发表时间：
2019-05-03
影响因子：
8.6
通讯作者：
Hoefling, Sven
中科院分区：
文献类型：
--
作者：
Dusanowski, Lukasz;Kwon, Soon-Hong;Hoefling, Sven
集成单光子源是实现量子信息处理可扩展设备的关键构建模块。对于此类应用，芯片上需要高度相干且不可区分的单光子。在这里，我们报告了基于与单模和多模脊波导耦合的 In(Ga)As/GaAs 量子点的触发共振荧光单光子源。我们证明了在多模（单模）波导器件满足多干涉量子光学应用的严格要求的情况下，可以生成具有 99.1%（96.0%）单光子纯度和 97.5%（95.0%）不可区分性的高度线性偏振共振荧光光子。我们的集成触发单光子源可以轻松扩展，为片上线性光量子模拟、量子计算和量子网络提供了一条现实的途径。
Integrated single photon sources are key building blocks for realizing scalable devices for quantum information processing. For such applications highly coherent and indistinguishable single photons on a chip are required. Here we report on a triggered resonance fluorescence single photon source based on In(Ga)As/GaAs quantum dots coupled to single- and multimode ridge waveguides. We demonstrate the generation of highly linearly polarized resonance fluorescence photons with 99.1% (96.0%) single photon purity and 97.5% (95.0%) indistinguishability in case of multimode (single mode) waveguide devices fulfilling the strict requirements imposed by multi-interferometric quantum optics applications. Our integrated triggered single photon source can be readily scaled up, promising a realistic pathway for on-chip linear optical quantum simulation, quantum computation, and quantum networks.