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首页> 外文会议>Nonlinear Optics and Its Applications VIII; and Quantum Optics III >Cross-absorption as a limit to heralded silicon photon pair sources
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Cross-absorption as a limit to heralded silicon photon pair sources

机译：交叉吸收限制了预告的硅光子对源

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摘要

In recent years integrated waveguide devices have emerged as an attractive platform for scalable quantum technologies. In contrast to earlier free-space investigations, one must consider additional effects induced by the media. In amorphous materials, spontaneous Raman scattered photons act as a noise source. In crystalline materials two-photon absorption (TPA) and free carrier absorption (FCA) are present at large intensities. While initial observations noted TPA affected experiments in integrated semiconductor devices, at present the nuanced roles of these processes in the quantum regime is unclear. Here, using single photons generated via spontaneous four-wave mixing (SFWM) in silicon, we experimentally demonstrate that cross-TPA (XTPA) between a classical pump beam and generated single photons imposes an intrinsic limit on heralded single photon generation, even in the single pair regime. Our newly developed model is in excellent agreement with experimental results.
机译：近年来，集成波导设备已经成为可伸缩量子技术的有吸引力的平台。与早期的自由空间研究相反，人们必须考虑媒体引起的其他影响。在非晶态材料中，自发的拉曼散射光子充当噪声源。在晶体材料中，大强度存在双光子吸收（TPA）和自由载流子吸收（FCA）。尽管最初的观察结果表明TPA影响了集成半导体器件中的实验，但目前尚不清楚这些过程在量子机制中的细微作用。在这里，我们使用硅中通过自发四波混合（SFWM）生成的单光子，通过实验证明了经典泵浦光束和生成的单光子之间的交叉TPA（XTPA）对先驱单光子的产生施加了固有限制，即使在单对体制。我们新开发的模型与实验结果非常吻合。

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  • 来源
  • 会议地点 Brussels(BE)
  • 作者

    Chad A. Husko; Alex S. Clark; Matthew J. Collins; Alfredo De Rossi; Sylvain Combrie; Gaeelle Lehoucq; Isabella H. Rey; Thomas F. Krauss; Chunle Xiong; Benjamin J. Eggleton;

  • 作者单位

    Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW 2006, Australia;

    Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW 2006, Australia;

    Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW 2006, Australia;

    Thales Research and Technology, 1 Av. A. Fresnel, 91767 Palaiseau, France;

    Thales Research and Technology, 1 Av. A. Fresnel, 91767 Palaiseau, France;

    Thales Research and Technology, 1 Av. A. Fresnel, 91767 Palaiseau, France;

    SUPA, School of Physics and Astronomy, University of St Andrews, Fife, KY16 9SS, UK;

    SUPA, School of Physics and Astronomy, University of St Andrews, Fife, KY16 9SS, UK, Department of Physics, University of York, YORK, YO10 5DD, UK;

    Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW 2006, Australia;

    Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW 2006, Australia;

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  • 正文语种 eng
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  • 关键词

    Silicon photonics; quantum integrated photonics; integrated photonics; nonlinear optics; photonic crystals; two photon absorption; quantum information; single photon sources;

    机译：硅光子学；量子集成光子学集成光子学非线性光学光子晶体；两个光子吸收；量子信息单光子源;

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