Open AccessCoupling silicon vacancy centers in a thin diamond membrane to a silica optical microresonator
Author(s) -
Abigail Pauls,
Ignas Lekavicius,
Hailin Wang
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.399331
Subject(s) - laser linewidth , whispering gallery wave , diamond , materials science , vacancy defect , silicon , spins , optics , optoelectronics , coupling (piping) , photon , optomechanics , whispering gallery , optical cavity , photoluminescence , resonator , physics , condensed matter physics , laser , composite material
We report the development of a composite cavity QED system, in which silicon vacancy centers in a diamond membrane as thin as 100 nm couple to optical whispering gallery modes (WGMs) of a silica microsphere with a diameter of order 50 µm. The membrane induces a linewidth broadening of 3 MHz for equatorial and off-resonant WGMs, while the overall linewidth of the composite system remains below 40 MHz. Photoluminescence experiments in the cavity QED setting demonstrate the efficient coupling of optical emissions from silicon vacancy centers into the WGMs. Additional analysis indicates that the composite system can be used to achieve the good cavity limit in cavity QED, enabling an experimental platform for applications such as state transfer between spins and photons.