Ultra-low loss quantum photonic circuits integrated with single quantum emitters

Ashish Chanana, Hugo Larocque, Renan Moreira, Jacques Carolan, Biswarup Guha, Emerson G. Melo, Vikas Anant, Jindong Song, Dirk Englund, Daniel J. Blumenthal, Kartik Srinivasan and Marcelo Davanco ()
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Ashish Chanana: National Institute of Standards and Technology
Hugo Larocque: Massachusetts Institute of Technology
Renan Moreira: University of California Santa Barbara
Jacques Carolan: Massachusetts Institute of Technology
Biswarup Guha: National Institute of Standards and Technology
Emerson G. Melo: National Institute of Standards and Technology
Vikas Anant: Photon Spot, Inc.
Jindong Song: Korea Institute of Science and Technology
Dirk Englund: Massachusetts Institute of Technology
Daniel J. Blumenthal: University of California Santa Barbara
Kartik Srinivasan: National Institute of Standards and Technology
Marcelo Davanco: National Institute of Standards and Technology

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract The scaling of many photonic quantum information processing systems is ultimately limited by the flux of quantum light throughout an integrated photonic circuit. Source brightness and waveguide loss set basic limits on the on-chip photon flux. While substantial progress has been made, separately, towards ultra-low loss chip-scale photonic circuits and high brightness single-photon sources, integration of these technologies has remained elusive. Here, we report the integration of a quantum emitter single-photon source with a wafer-scale, ultra-low loss silicon nitride photonic circuit. We demonstrate triggered and pure single-photon emission into a Si3N4 photonic circuit with ≈ 1 dB/m propagation loss at a wavelength of ≈ 930 nm. We also observe resonance fluorescence in the strong drive regime, showing promise towards coherent control of quantum emitters. These results are a step forward towards scaled chip-integrated photonic quantum information systems in which storing, time-demultiplexing or buffering of deterministically generated single-photons is critical.

Date: 2022
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DOI: 10.1038/s41467-022-35332-z

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