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Large reconfigurable quantum circuits with SPAD arrays and multimode fibers

Optica, ISSN: 2334-2536, Vol: 11, Issue: 3, Page: 340-343
2024
  • 2
    Citations
  • 0
    Usage
  • 21
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    2
    • Citation Indexes
      2
      • CrossRef
        2
  • Captures
    21

Article Description

Reprogrammable integrated optics provides a natural platform for tunable quantum photonic circuits, but faces challenges when high dimensions and high connectivity are involved. Here, we implement high-dimensional linear transformations on spatial modes of photons using wavefront shaping together with mode mixing in a multimode fiber, and measure photon correlations using a time-tagging single-photon avalanche diode (SPAD) array. Our demonstration of a generalization of a Hong-Ou-Mandel interference to 22 output ports shows the scalability potential of wavefront shaping in complex media in conjunction with SPAD arrays for implementing highdimensional reconfigurable quantum circuits. Specifically, we achieved. 80.5 ± 6.8/% similarity for indistinguishable photon pairs and. 84.9 ± 7.0/%similarity for distinguishable photon pairs using 22 detectors and random circuits.

Bibliographic Details

Adrian Makowski; Michał Dąbrowski; Sylvain Gigan; Radek Lapkiewicz; Ivan Michel Antolovic; Claudio Bruschini; Edoardo Charbon; Hugo Defienne

Optica Publishing Group

Materials Science; Physics and Astronomy

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