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; Marcelo Davanco

doi:10.1038/s41467-022-35332-z

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

Nat Commun. 2022 Dec 12;13(1):7693. doi: 10.1038/s41467-022-35332-z.

Authors

Ashish Chanana^{1

2

3}, Hugo Larocque⁴, Renan Moreira⁵, Jacques Carolan^{4

6}, Biswarup Guha^{1

7}, Emerson G Melo^{1

8}, Vikas Anant⁹, Jindong Song¹⁰, Dirk Englund⁴, Daniel J Blumenthal⁵, Kartik Srinivasan^{1

7}, Marcelo Davanco¹¹

Affiliations

¹ Microsystems and Nanotechnology Division, Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA.
² Institute for Research in Electronics and Applied Physics and Maryland NanoCenter, University of Maryland, College Park, MD, USA.
³ Theiss Research, La Jolla, CA, USA.
⁴ Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
⁵ Department of Electrical and Computer Engineering, University of California Santa Barbara, Santa Barbara, CA, USA.
⁶ Wolfson Institute for Biomedical Research, University College London, London, UK.
⁷ Joint Quantum Institute, NIST/University of Maryland, College Park, MD, USA.
⁸ Materials Engineering Department, Lorena School of Engineering, University of São Paulo, Lorena, SP, Brazil.
⁹ Photon Spot, Inc., Monrovia, CA, USA.
¹⁰ Center for Opto-Electronic Materials and Devices, Korea Institute of Science and Technology, Seoul, 02792, South Korea.
¹¹ Microsystems and Nanotechnology Division, Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA. [email protected].

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.

Abstract

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