Cavity-coupled telecom atomic source in silicon

Adam Johnston, Ulises Felix-Rendon, Yu-En Wong and Songtao Chen ()
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Adam Johnston: Rice University
Ulises Felix-Rendon: Rice University
Yu-En Wong: Rice University
Songtao Chen: Rice University

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract Novel T centers in silicon hold great promise for quantum networking applications due to their telecom band optical transitions and the long-lived ground state electronic spins. An open challenge for advancing the T center platform is to enhance its weak and slow zero phonon line (ZPL) emission. In this work, by integrating single T centers with a low-loss, small mode-volume silicon photonic crystal cavity, we demonstrate an enhancement of the fluorescence decay rate by a factor of F = 6.89. Efficient photon extraction enables the system to achieve an average ZPL photon outcoupling rate of 73.3 kHz under saturation, which is about two orders of magnitude larger than the previously reported value. The dynamics of the coupled system is well modeled by solving the Lindblad master equation. These results represent a significant step towards building efficient T center spin-photon interfaces for quantum information processing and networking applications.

Date: 2024
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DOI: 10.1038/s41467-024-46643-8

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