Coupling of silicon-vacancy centers to a single crystal diamond cavity

Abstract

Optical coupling of an ensemble of silicon-vacancy (SiV) centers to single-crystal diamond microdisk cavities is demonstrated. The cavities are fabricated from a single-crystal diamond membrane generated by ion implantation and, electrochemical liftoff followed by homo-epitaxial overgrowth. Whispering gallery modes which spectrally overlap with the zero-phonon line (ZPL) of the SiV centers and exhibit quality factors ~2200 are measured. Lifetime reduction from 1.8 ns to 1.48 ns is observed from SiV centers in the cavity compared to those in the membrane outside the cavity. These results are pivotal in developing diamond integrated photonics networks

Diamond Nanophotonics

“…While the first experiments of δ − doped films used a bulk crystal, growth on membranes is currently underway. [123,130] …”

“…[40] In addition to coupling NV centers to optical resonators, experiments on Purcell enhancement with SiV centers are underway. Initial coupling of SiVs to PCCs and microdisk cavities has been demonstrated [64,130] . Very recently, first results on the controlled fabrication of photonic crystal cavities around a pre-characterized SiV center and the coupling of the center to the cavity have been reported [132] .…”

Fiber-Coupled Diamond Quantum Nanophotonic Interface

“…Towards this goal, parallel efforts in the field of diamond nanofabrication and nanophotonics, have demonstrated on-chip low loss (~ db/cm) diamond waveguides and a wide range of high quality (Q) factor optical cavities [12,[14][15][16][17][18][19][20][21][22][23][24][25][26]. Recently, angled-etching nanofabrication [27][28][29][30] has emerged as a scalable method for realizing nanophotonic devices from bulk single-crystal diamond substrates.…”

An analytical model for the mechanical deformation of locally graphitized diamond

“…A relevant number of works has concentrated in recent years on the application of MeV-ioninduced graphitization to fabricate and functionalize microstructures and devices in single-crystal diamond, including bio-sensors 1 , ionizing radiation detectors 2,3 , bolometers 4 , nano-electromechanical systems (NEMS) 5,6 , photonic structures [7][8][9][10] and optical waveguides 11,12 .…”