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Integrated generation of complex optical quantum states and their coherent control

机译：复杂光学量子态的积分生成及其相干控制

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摘要

Complex optical quantum states based on entangled photons are essential for investigations of fundamental physics and are the heart of applications in quantum information science. Recently, integrated photonics has become a leading platform for the compact, cost-efficient, and stable generation and processing of optical quantum states. However, on-chip sources are currently limited to basic two-dimensional (qubit) two-photon states, whereas scaling the state complexity requires access to states composed of several (>2) photons and/or exhibiting high photon dimensionality. Here we show that the use of integrated frequency combs (on-chip light sources with a broad spectrum of evenly-spaced frequency modes) based on high-Q nonlinear microring resonators can provide solutions for such scalable complex quantum state sources. In particular, by using spontaneous four-wave mixing within the resonators, we demonstrate the generation of bi- and multi-photon entangled qubit states over a broad comb of channels spanning the S, C. and L telecommunications bands, and control these states coherently to perform quantum interference measurements and state tomography. Furthermore, we demonstrate the on-chip generation of entangled high-dimensional (quDit) states, where the photons are created in a coherent superposition of multiple pure frequency modes. Specifically, we confirm the realization of a quantum system with at least one hundred dimensions. Moreover, using off-the-shelf telecommunications components, we introduce a platform for the coherent manipulation and control of frequency-entangled quDit states. Our results suggest that microcavity-based entangled photon state generation and the coherent control of states using accessible telecommunications infrastructure introduce a powerful and scalable platform for quantum information science.
机译：基于纠缠光子的复杂光学量子态对于基础物理学的研究是必不可少的，并且是量子信息科学中应用的核心。最近，集成光子学已成为紧凑，经济高效且稳定地生成和处理光量子态的领先平台。但是，片上源目前仅限于基本的二维（量子位）双光子状态，而缩放状态复杂度需要访问由几个（> 2）光子组成的状态和/或表现出高光子维数。在这里，我们表明基于高Q非线性微环谐振器的集成频率梳（具有宽频谱的均匀间隔频率模式的片上光源）的使用可以为此类可扩展的复杂量子状态源提供解决方案。特别是，通过在谐振器内使用自发的四波混频，我们证明了跨越S，C和L电信频段的宽信道组合上双光子和多光子纠缠量子位状态的产生，并相干地控制了这些状态执行量子干涉测量和状态层析成像。此外，我们展示了纠缠的高维（quDit）状态的片上生成，其中光子是在多个纯频率模式的相干叠加中创建的。具体而言，我们确认了至少具有一百维的量子系统的实现。此外，使用现成的电信组件，我们引入了一个平台，用于频率纠缠的quDit状态的相干操纵和控制。我们的结果表明，基于微腔的纠缠光子状态生成以及使用可访问的电信基础结构对状态进行相干控制，为量子信息科学引入了强大而可扩展的平台。

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  • 来源
    《Nanophotonics Australasia 2017》|2017年|104561A.1-104561A.5|共5页
  • 会议地点 Melbourne(AU)
  • 作者

    Piotr Roztocki; Michael Kues; Christian Reimer; Luis Romero Cortes; Stefania Sciara; Benjamin Wetzel; Yanbing Zhang; Alfonso Cino; Sai T. Chu; Brent E. Little; David J. Moss; Lucia Caspani; Jose Azafia; Roberto Morandotti;

  • 作者单位

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada;

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada,School of Engineering, University of Glasgow, Rankine Building, Oakfield Avenue, Glasgow G12 8LT, UK;

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada;

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada;

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada,Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Palermo, Italy;

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada,School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton BN1 9RH, UK;

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada;

    Department of Energy, Information Engineering and Mathematical Models, University of Palermo, Palermo, Italy;

    Department of Physics and Material Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China;

    State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China;

    Centre for Micro Photonics, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia;

    Institute of Photonics, Department of Physics, University of Strathclyde, Glasgow G1 1RD, UK,Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK;

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada;

    INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada,Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China,National Research University of Information Technologies, Mechanics and Optics, St Petersburg, Russia;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Quantum optics; Integrated photonics; Frequency combs; Nonlinear processes; spontaneous four-wave mixing;

    机译：量子光学；集成光子学频率梳；非线性过程；自发四波混频;

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