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Mid-infrared coincidence measurements on twin photons at room temperature

Author

Listed:
  • M. Mancinelli

    (Nanoscience Laboratory, University of Trento)

  • A. Trenti

    (Nanoscience Laboratory, University of Trento)

  • S. Piccione

    (Nanoscience Laboratory, University of Trento)

  • G. Fontana

    (Nanoscience Laboratory, University of Trento)

  • J. S. Dam

    (DTU Fotonik, Technical University of Denmark
    Present address: IRSee ApS, Frederiksborgvej 399, 4000 Roskilde, Denmark)

  • P. Tidemand-Lichtenberg

    (DTU Fotonik, Technical University of Denmark)

  • C. Pedersen

    (DTU Fotonik, Technical University of Denmark)

  • L. Pavesi

    (Nanoscience Laboratory, University of Trento)

Abstract

Quantum measurements using single-photon detectors are opening interesting new perspectives in diverse fields such as remote sensing, quantum cryptography and quantum computing. A particularly demanding class of applications relies on the simultaneous detection of correlated single photons. In the visible and near infrared wavelength ranges suitable single-photon detectors do exist. However, low detector quantum efficiency or excessive noise has hampered their mid-infrared (MIR) counterpart. Fast and highly efficient single-photon detectors are thus highly sought after for MIR applications. Here we pave the way to quantum measurements in the MIR by the demonstration of a room temperature coincidence measurement with non-degenerate twin photons at about 3.1 μm. The experiment is based on the spectral translation of MIR radiation into the visible region, by means of efficient up-converter modules. The up-converted pairs are then detected with low-noise silicon avalanche photodiodes without the need for cryogenic cooling.

Suggested Citation

  • M. Mancinelli & A. Trenti & S. Piccione & G. Fontana & J. S. Dam & P. Tidemand-Lichtenberg & C. Pedersen & L. Pavesi, 2017. "Mid-infrared coincidence measurements on twin photons at room temperature," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15184
    DOI: 10.1038/ncomms15184
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