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Wavevector multiplexed atomic quantum memory via spatially-resolved single-photon detection

Author

Listed:
  • Michał Parniak

    (Institute of Experimental Physics, Faculty of Physics, University of Warsaw)

  • Michał Dąbrowski

    (Institute of Experimental Physics, Faculty of Physics, University of Warsaw)

  • Mateusz Mazelanik

    (Institute of Experimental Physics, Faculty of Physics, University of Warsaw)

  • Adam Leszczyński

    (Institute of Experimental Physics, Faculty of Physics, University of Warsaw)

  • Michał Lipka

    (Institute of Experimental Physics, Faculty of Physics, University of Warsaw)

  • Wojciech Wasilewski

    (Institute of Experimental Physics, Faculty of Physics, University of Warsaw)

Abstract

Parallelized quantum information processing requires tailored quantum memories to simultaneously handle multiple photons. The spatial degree of freedom is a promising candidate to facilitate such photonic multiplexing. Using a single-photon resolving camera, we demonstrate a wavevector multiplexed quantum memory based on a cold atomic ensemble. Observation of nonclassical correlations between Raman scattered photons is confirmed by an average value of the second-order correlation function $$g_{{\mathrm{S,AS}}}^{{\mathrm{(2)}}} = 72 \pm 5$$ g S,AS (2) = 72 ± 5 in 665 separated modes simultaneously. The proposed protocol utilizing the multimode memory along with the camera will facilitate generation of multi-photon states, which are a necessity in quantum-enhanced sensing technologies and as an input to photonic quantum circuits.

Suggested Citation

  • Michał Parniak & Michał Dąbrowski & Mateusz Mazelanik & Adam Leszczyński & Michał Lipka & Wojciech Wasilewski, 2017. "Wavevector multiplexed atomic quantum memory via spatially-resolved single-photon detection," Nature Communications, Nature, vol. 8(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-02366-7
    DOI: 10.1038/s41467-017-02366-7
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    Cited by:

    1. M. Businger & L. Nicolas & T. Sanchez Mejia & A. Ferrier & P. Goldner & Mikael Afzelius, 2022. "Non-classical correlations over 1250 modes between telecom photons and 979-nm photons stored in 171Yb3+:Y2SiO5," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Mateusz Mazelanik & Adam Leszczyński & Michał Parniak, 2022. "Optical-domain spectral super-resolution via a quantum-memory-based time-frequency processor," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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