Strongly cavity-enhanced spontaneous emission from silicon-vacancy centers in diamond

Zhang, Jingyuan Linda and Sun, Shuo and Burek, Michael J. and Dory, Constantin and Tzeng, Yan-Kai and Fischer, Kevin A. and Kelaita, Yousif and Lagoudakis, Konstantinos G. and Radulaski, Marina and Shen, Zhi-Xun and Melosh, Nicholas A. and Chu, Steven and Lončar, Marko and Vučković, Jelena (2018) Strongly cavity-enhanced spontaneous emission from silicon-vacancy centers in diamond. Nano Letters, 18 (2). pp. 1360-1365. ISSN 1530-6992

[thumbnail of Zhang-etal-NL-2018-Strongly-cavity-enhanced-spontaneous-emission-from-silicon-vacancy]
Preview
 Text (Zhang-etal-NL-2018-Strongly-cavity-enhanced-spontaneous-emission-from-silicon-vacancy)
Zhang_etal_NL_2018_Strongly_cavity_enhanced_spontaneous_emission_from_silicon_vacancy.pdf
Accepted Author Manuscript
Download (1MB)| Preview

    Abstract

    Quantum emitters are an integral component for a broad range of quantum technologies, including quantum communication, quantum repeaters, and linear optical quantum computation. Solid-state color centers are promising candidates for scalable quantum optics due to their long coherence time and small inhomogeneous broadening. However, once excited, color centers often decay through phonon-assisted processes, limiting the efficiency of single-photon generation and photon-mediated entanglement generation. Herein, we demonstrate strong enhancement of spontaneous emission rate of a single silicon-vacancy center in diamond embedded within a monolithic optical cavity, reaching a regime in which the excited-state lifetime is dominated by spontaneous emission into the cavity mode. We observe 10-fold lifetime reduction and 42-fold enhancement in emission intensity when the cavity is tuned into resonance with the optical transition of a single silicon-vacancy center, corresponding to 90% of the excited-state energy decay occurring through spontaneous emission into the cavity mode. We also demonstrate the largest coupling strength (g/2π = 4.9 ± 0.3 GHz) and cooperativity (C = 1.4) to date for color-center-based cavity quantum electrodynamics systems, bringing the system closer to the strong coupling regime.

    ORCID iDs

    Zhang, Jingyuan Linda, Sun, Shuo, Burek, Michael J., Dory, Constantin, Tzeng, Yan-Kai, Fischer, Kevin A., Kelaita, Yousif, Lagoudakis, Konstantinos G. ORCID logoORCID: https://orcid.org/0000-0002-4410-4755, Radulaski, Marina, Shen, Zhi-Xun, Melosh, Nicholas A., Chu, Steven, Lončar, Marko and Vučković, Jelena;
    • Item type:Article
      ID code:64223
      Dates:
      Date
      Event
      1 February 2018
      Published
      29 January 2018
      Published Online
      25 January 2018
      Accepted
      Keywords:purcell enhancement, single photon generation, defect center materials, diamond, silicon vacancy center, nanophotonics, Physics, Physics and Astronomy(all)
      Subjects:Science > Physics
      Department:Faculty of Science > Physics
      Depositing user: Pure Administrator
      Date deposited:04 Jun 2018 11:21
      Last modified:23 Sep 2021 06:46
      URI:https://strathprints.strath.ac.uk/id/eprint/64223
    CORE (COnnecting REpositories)