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High-throughput quantum photonic devices emitting indistinguishable photons in the telecom C-band

Author

Listed:
  • Paweł Holewa

    (Wrocław University of Science and Technology
    Technical University of Denmark
    Technical University of Denmark)

  • Daniel A. Vajner

    (Technische Universität Berlin)

  • Emilia Zięba-Ostój

    (Wrocław University of Science and Technology)

  • Maja Wasiluk

    (Wrocław University of Science and Technology)

  • Benedek Gaál

    (Technical University of Denmark)

  • Aurimas Sakanas

    (Technical University of Denmark)

  • Marek Burakowski

    (Wrocław University of Science and Technology)

  • Paweł Mrowiński

    (Wrocław University of Science and Technology)

  • Bartosz Krajnik

    (Wrocław University of Science and Technology)

  • Meng Xiong

    (Technical University of Denmark
    Technical University of Denmark)

  • Kresten Yvind

    (Technical University of Denmark
    Technical University of Denmark)

  • Niels Gregersen

    (Technical University of Denmark)

  • Anna Musiał

    (Wrocław University of Science and Technology)

  • Alexander Huck

    (Technical University of Denmark)

  • Tobias Heindel

    (Technische Universität Berlin)

  • Marcin Syperek

    (Wrocław University of Science and Technology)

  • Elizaveta Semenova

    (Technical University of Denmark
    Technical University of Denmark)

Abstract

Single indistinguishable photons at telecom C-band wavelengths are essential for quantum networks and the future quantum internet. However, high-throughput technology for single-photon generation at 1550 nm remained a missing building block to overcome present limitations in quantum communication and information technologies. Here, we demonstrate the high-throughput fabrication of quantum-photonic integrated devices operating at C-band wavelengths based on epitaxial semiconductor quantum dots. Our technique enables the deterministic integration of single pre-selected quantum emitters into microcavities based on circular Bragg gratings. Respective devices feature the triggered generation of single photons with ultra-high purity and record-high photon indistinguishability. Further improvements in yield and coherence properties will pave the way for implementing single-photon non-linear devices and advanced quantum networks at telecom wavelengths.

Suggested Citation

  • Paweł Holewa & Daniel A. Vajner & Emilia Zięba-Ostój & Maja Wasiluk & Benedek Gaál & Aurimas Sakanas & Marek Burakowski & Paweł Mrowiński & Bartosz Krajnik & Meng Xiong & Kresten Yvind & Niels Gregers, 2024. "High-throughput quantum photonic devices emitting indistinguishable photons in the telecom C-band," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47551-7
    DOI: 10.1038/s41467-024-47551-7
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