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Ultrabright source of entangled photon pairs

Author

Listed:
  • Adrien Dousse

    (Laboratoire de Photonique et de Nanostructures, CNRS)

  • Jan Suffczyński

    (Laboratoire de Photonique et de Nanostructures, CNRS
    Present address: Institute of Experimental Physics, University of Warsaw, 69 Hoża Street, 00-681 Warsaw, Poland.)

  • Alexios Beveratos

    (Laboratoire de Photonique et de Nanostructures, CNRS)

  • Olivier Krebs

    (Laboratoire de Photonique et de Nanostructures, CNRS)

  • Aristide Lemaître

    (Laboratoire de Photonique et de Nanostructures, CNRS)

  • Isabelle Sagnes

    (Laboratoire de Photonique et de Nanostructures, CNRS)

  • Jacqueline Bloch

    (Laboratoire de Photonique et de Nanostructures, CNRS)

  • Paul Voisin

    (Laboratoire de Photonique et de Nanostructures, CNRS)

  • Pascale Senellart

    (Laboratoire de Photonique et de Nanostructures, CNRS)

Abstract

Sourcing entangled photon pairs Entangled photon pairs are essential components for practical quantum information applications. Two different approaches for producing entanglement are available: parametric conversion in a nonlinear optical medium, or radiative decay of electron–hole pairs trapped in a semiconductor quantum dot. The first approach has a low intrinsic efficiency; the second suffers from poor collection efficiency. In general, collection of emitted photons from quantum dots is often improved by coupling them to an optical cavity, but this is not straightforward to implement for entangled photon pairs. Dousse et al. have now constructed a suitable optical cavity in the form of a 'photonic molecule' — two connecting identical microcavities that are deterministically coupled to the optically active modes of a pre-selected quantum dot. They show that entangled photon pairs are emitted into two cavity modes, with a rate of 0.12 per excitation pulse. The authors believe that improvements in the fabrication of the device should enable triggered sources of entangled photon pairs, with an overall (creation and collection) efficiency of 80%.

Suggested Citation

  • Adrien Dousse & Jan Suffczyński & Alexios Beveratos & Olivier Krebs & Aristide Lemaître & Isabelle Sagnes & Jacqueline Bloch & Paul Voisin & Pascale Senellart, 2010. "Ultrabright source of entangled photon pairs," Nature, Nature, vol. 466(7303), pages 217-220, July.
    • Handle: RePEc:nat:nature:v:466:y:2010:i:7303:d:10.1038_nature09148
    DOI: 10.1038/nature09148
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    Cited by:

    1. Yifan Xie & Shuo Feng & Linxiao Deng & Aoran Cai & Liyu Gan & Zifan Jiang & Peng Yang & Guilin Ye & Zaiqing Liu & Li Wen & Qing Zhu & Wanjun Zhang & Zhanpeng Zhang & Jiahe Li & Zeyu Feng & Chutian Zha, 2023. "Inverse design of chiral functional films by a robotic AI-guided system," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    2. Dominik D. Bühler & Matthias Weiß & Antonio Crespo-Poveda & Emeline D. S. Nysten & Jonathan J. Finley & Kai Müller & Paulo V. Santos & Mauricio M. Lima & Hubert J. Krenner, 2022. "On-chip generation and dynamic piezo-optomechanical rotation of single photons," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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