TY - JOUR
T1 - Strongly cavity-enhanced spontaneous emission from silicon-vacancy centers in diamond
AU - Zhang, Jingyuan Linda
AU - Sun, Shuo
AU - Burek, Michael J.
AU - Dory, Constantin
AU - Tzeng, Yan-Kai
AU - Fischer, Kevin A.
AU - Kelaita, Yousif
AU - Lagoudakis, Konstantinos G.
AU - Radulaski, Marina
AU - Shen, Zhi-Xun
AU - Melosh, Nicholas A.
AU - Chu, Steven
AU - Lončar, Marko
AU - Vučković, Jelena
PY - 2018/2/1
Y1 - 2018/2/1
N2 - 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.
AB - 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.
KW - purcell enhancement
KW - single photon generation
KW - defect center materials
KW - diamond
KW - silicon vacancy center
KW - nanophotonics
U2 - 10.1021/acs.nanolett.7b05075
DO - 10.1021/acs.nanolett.7b05075
M3 - Article
SN - 1530-6984
VL - 18
SP - 1360
EP - 1365
JO - Nano Letters
JF - Nano Letters
IS - 2
ER -