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  • Letter
  • Open Access

Independent Operation of Two Waveguide-Integrated Quantum Emitters

C. Papon1,*, Y. Wang1, R. Uppu1,†, S. Scholz2, A.D. Wieck2, A. Ludwig2, P. Lodahl1, and L. Midolo1

  • 1Center for Hybrid Quantum Networks (Hy-Q), The Niels Bohr Institute, University of Copenhagen, Copenhagen Ø DK-2100, Denmark
  • 2Lehrstuhl für Angewandte Festörperphysik, Ruhr-Universität Bochum, Universitätsstraße 150, Bochum 44801, Germany

  • *cpapon@mit.edu
  • †Present address: Department of Physics and Astronomy, University of Iowa, 205 N. Madison Street, Iowa City, Iowa 52242, USA.
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Phys. Rev. Applied 19, L061003 – Published 27 June, 2023

DOI: https://doi.org/10.1103/PhysRevApplied.19.L061003

Abstract

We demonstrate the resonant excitation of two quantum dots in a photonic integrated circuit for on-chip single-photon generation in multiple spatial modes. The two quantum dots are electrically tuned to the same emission wavelength using a pair of isolated p-i-n junctions and excited by a resonant pump laser via dual-mode waveguides. We demonstrate two-photon quantum interference visibility of (79±2)% under continuous-wave excitation of narrow-linewidth quantum dots. Our work solves an outstanding challenge in quantum photonics by realizing the key enabling functionality of how to scale up deterministic single-photon sources.

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Outline

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Phys. Rev. Applied 19, L061003– Published 27 June, 2023
  • Received 14 October 2022
  • Revised 11 April 2023
  • Accepted 1 May 2023
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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