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arXiv · 2202.04615

Triggered single-photon generation and resonance fluorescence in ultra-low loss integrated photonic circuits

Ashish Chanana·Hugo Larocque·Renan Moreira·Jacques Carolan·Biswarup Guha·Vikas Anant·Jin Dong Song·Dirk Englund·Daniel J. Blumenthal·Kartik Srinivasan·Marcelo Davanco
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Abstract

A central requirement for photonic quantum information processing systems lies in the combination of nonclassical light sources and low-loss, phase-stable optical modes. While substantial progress has been made separately towards ultra-low loss, $\leq1$ dB/m, chip-scale photonic circuits and high brightness single-photon sources, integration of these technologies has remained elusive. Here, we report a significant advance towards this goal, in the hybrid integration of a quantum emitter single-photon source with a wafer-scale, ultra-low loss silicon nitride photonic integrated circuit. We demonstrate triggered and pure single-photon emission directly into a Si$_3$N$_4$ photonic circuit with $\approx1$ dB/m propagation loss at a wavelength of $\approx920$ nm. These losses are more than two orders of magnitude lower than reported to date for any photonic circuit with on-chip quantum emitter sources, and $>50$ % lower than for any prior foundry-compatible integrated quantum photonic circuit, to the best of our knowledge. Using these circuits we report the observation of resonance fluorescence in the strong drive regime, a milestone towards integrated coherent control of quantum emitters. These results constitute an important step forward towards the creation of scaled chip-integrated photonic quantum information systems.

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BibTeXRIS

Ashish Chanana, Hugo Larocque, Renan Moreira, Jacques Carolan, Biswarup Guha, Vikas Anant, Jin Dong Song, Dirk Englund, Daniel J. Blumenthal, Kartik Srinivasan, Marcelo Davanco. 2022-02-09. Triggered single-photon generation and resonance fluorescence in ultra-low loss integrated photonic circuits. https://doi.org/10.1038/s41467-022-35332-z

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