A single-photon emitter coupled to a phononic-crystal resonator in the resolved-sideband regime

Clemens Spinnler (), Giang N. Nguyen, Ying Wang, Liang Zhai, Alisa Javadi, Marcel Erbe, Sven Scholz, Andreas D. Wieck, Arne Ludwig, Peter Lodahl, Leonardo Midolo and Richard J. Warburton
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Clemens Spinnler: University of Basel
Giang N. Nguyen: University of Basel
Ying Wang: University of Copenhagen
Liang Zhai: University of Basel
Alisa Javadi: University of Basel
Marcel Erbe: University of Basel
Sven Scholz: Ruhr-Universität Bochum
Andreas D. Wieck: Ruhr-Universität Bochum
Arne Ludwig: Ruhr-Universität Bochum
Peter Lodahl: University of Copenhagen
Leonardo Midolo: University of Copenhagen
Richard J. Warburton: University of Basel

Nature Communications, 2024, vol. 15, issue 1, 1-6

Abstract: Abstract A promising route towards the deterministic creation and annihilation of single-phonons is to couple a single-photon emitter to a mechanical resonator. The challenge lies in reaching the resolved-sideband regime with a large coupling rate and a high mechanical quality factor. We achieve this by coupling self-assembled InAs quantum dots to a small mode-volume phononic-crystal resonator with mechanical frequency Ωm/2π = 1.466 GHz and quality factor Qm = 2.1 × 103. Thanks to the high coupling rate of gep/2π = 2.9 MHz, and by exploiting a matching condition between the effective Rabi and mechanical frequencies, we observe the interaction between the two systems via correlations in the emitted photons. Our results represent a major step towards quantum control of the mechanical resonator via a single-photon emitter.

Date: 2024
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DOI: 10.1038/s41467-024-53882-2

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