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Multidimensional quantum entanglement with large-scale integrated optics

Artykuł
Czasopismo : Science   Tom: 360, Zeszyt: 6386, Strony: 285-291
Jianwei Wang [1] , [2] , Stefano Paesani [1] , Yunhong Ding [3] , [4] , Raffaele Santagati [1] , Paul Skrzypczyk [5] , Alexia Salavrakos [6] , Jordi Tura [7] , Remigiusz Augusiak [8] , Laura Mančinska [9] , Davide Bacco [3] , [4] , Damien Bonneau [1] , Joshua Silverstone [1] , Qihuang Gong [2] , Antonio Acin [6] , [10] , Karsten Rottwitt [3] , [4] , Leif Oxenløwe [3] , [4] , Jeremy O’Brien [1] , Anthony Laing [1] , Mark Thompson [1]
  • [1]
    Quantum Engineering Technology Labs, H. H. Wills Physics Laboratory and Department of Electrical and Electronic Engineering, University of Bristol, Bristol BS8 1FD, UK
  • [2]
    State Key Laboratory for Mesoscopic Physics, School of Physics, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing 100871, China
  • [3]
    Department of Photonics Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
  • [4]
    Center for Silicon Photonics for Optical Communication, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
  • [5]
    H. H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL, UK
  • [6]
    ICFO–Institut de Ciencies Fotoniques, Barcelona Institute of Science and Technology, 08860 Castelldefels, Spain
  • [7]
    Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
  • [8]
  • [9]
    QMATH, Department of Mathematical Sciences, University of Copenhagen, 2100 Copenhagen Ø, Denmark
  • [10]
    ICREA–Institucio Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
2018-04-20 angielski
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The ability to control multidimensional quantum systems is central to the development of advanced quantum technologies. We demonstrate a multidimensional integrated quantum photonic platform able to generate, control, and analyze high-dimensional entanglement. A programmable bipartite entangled system is realized with dimensions up to 15 × 15 on a large-scale silicon photonics quantum circuit. The device integrates more than 550 photonic components on a single chip, including 16 identical photon-pair sources. We verify the high precision, generality, and controllability of our multidimensional technology, and further exploit these abilities to demonstrate previously unexplored quantum applications, such as quantum randomness expansion and self-testing on multidimensional states. Our work provides an experimental platform for the development of multidimensional quantum technologies.
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