Abstract
Resonantly enhanced emission from the zero-phonon line of a diamond nitrogen-vacancy (NV) center in single crystal diamond is demonstrated experimentally using a hybrid whispering gallery mode nanocavity. A 900 nm diameter ring nanocavity formed from gallium phosphide, whose sidewalls extend into a diamond substrate, is tuned onto resonance at a low temperature with the zero-phonon line of a negatively charged NV center implanted near the diamond surface. When the nanocavity is on resonance, the zero-phonon line intensity is enhanced by approximately an order of magnitude, and the spontaneous emission lifetime of the NV is reduced by as much as 18%, corresponding to a 6.3X enhancement of emission in the zero photon line.Received 20 June 2011DOI:https://doi.org/10.1103/PhysRevX.1.011007This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.Published by the American Physical Society
Highlights
Enhanced emission from the zero-phonon line of a diamond nitrogen-vacancy (NV) center in single crystal diamond is demonstrated experimentally using a hybrid whispering gallery mode nanocavity
Cavity enhancement of the emission is important for NV centers, as it provides a means for increasing the relative brightness of the narrowband zero-phonon line (ZPL) emission relative to the broadband phonon assisted emission
An alternative approach, which leverages existing semiconductor processing technology, is to create photonic structures from hybrid material systems in which a thin waveguiding layer is bonded to the surface of a single crystal diamond substrate
Summary
Enhanced emission from the zero-phonon line of a diamond nitrogen-vacancy (NV) center in single crystal diamond is demonstrated experimentally using a hybrid whispering gallery mode nanocavity. The room temperature electron spin coherence times of NVs can exceed a millisecond [6] These properties make NVs a promising qubit for proposed quantum networks [7], and an attractive system for applications such as magnetometry [8] and low power optical switching [9]. An alternative approach, which leverages existing semiconductor processing technology, is to create photonic structures from hybrid material systems in which a thin waveguiding layer is bonded to the surface of a single crystal diamond substrate. We demonstrate optical coupling between a nanoscale hybrid optical cavity and a single diamond NV center, and measure resonant Purcell enhanced spontaneous emission into the ZPL.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
