Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Cavity QED of Nitrogen Vacancy Centers in Diamond with Nanopillar and Deformed Silica Microsphere

Russell J. Barbour, Khodadad N. Dinyari, Hailin Wang

Published Jan 1, 2010• 0 citations
Publisher

Abstract

Deformed silica microspheres are used to greatly enhance evanescent coupling between whispering gallery modes and nitrogen vacancy centers in a diamond nanopillar, overcoming the difficulty of short evanescent decay length of the composite cavity-QED system.
DOI
10.1364/qels.2010.qthk2

Related papers

A Cavity QED System Coupling Nitrogen Vacancy Centers in a Diamond Nanopillar to a Silica Microsphere

Khodadad N. Dinyari, Mats Larsson, Hailin Wang

A composite cavity QED system, which couples nitrogen vacancy centers in a diamond nanopillar to whispering gallery modes in a silica microsphere and overcomes limitations of earlier diamond nanocrystal based systems, is demonstrated.

Conference on Lasers and Electro-Optics•Jan 1, 2009•0 citations

Coupling nitrogen vacancy centers in diamond nanopillars to whispering gallery microresonators

Khodadad N. Dinyari

For cavity quantum electrodynamics systems (cavity-QED) to play a role in quantum information processing applications and in quantum networks, they must be robust and scalable in addition to having a suitable method for the generation, processing and storage of quantum bits. One solution is to develop a composite system that couples a nitrogen vacancy (NV) center in diamond to a whispering gallery mode supported by a fused silica microsphere. Such a system is motivated by the optical and electron-spin properties of the NV center. The NV center is the leading spin-qubit and exhibits atomic like linewidths at cryogenic temperatures and has spin coherence times greater than milliseconds at room temperature. These long coherence times, coupled with nanosecond scale spin readout and manipulation times, allow for millions of quantum operations to be processed. Silica whispering gallery resonators are the only class of microresonators with quality factor high enough to reach the strong coupling regime, which is necessary for some quantum information processing applications. \n \nIntegrating these two components into a system that could position a diamond nanopillar near the surface of a deformed-double stemmed microsphere system, with nanometer precision, at 10 K was a major achievement of this research. Cavity resonances in deformed microspheres can be excited with a free-space coupling technique which simplifies their integration into cryogenic environments. In these intentionally deformed resonators, an enhanced evanescent field decay length was observed at specific locations along the ray orbit. The double-stem arrangement enables the cavity resonance to be tuned over 450 GHz, with sub-10 MHz resolution, at 10 K. These two features, the enhanced decay length and broad range tuning with high resolution, are indispensible tools for cavity-QED studies with silica microspheres. \n \nDiamond nanopillars were fabricated from single crystal diamond with diameters as small as 140 nm in order to maintain a high quality factor. Studies were conducted on NV centers in nanopillars and bulk diamond to determine their suitability for cavity-QED applications. In an attempt to increase the light-matter interaction between NV centers and whispering gallery modes, diamond substrates were optically characterized that were irradiated with nitrogen ions.

•Jan 1, 2012•0 citations

Coupling Nitrogen Vacancy Centers in a Diamond Nanopillar to a Silica Microsphere

Khodadad N. Dinyari, Mats I. Larsson, Hailin Wang

Bulletin of the American Physical Society•Mar 20, 2009•0 citations

Coupling Silicon Vacancies in Diamond to a Silica Microsphere Optical Resonator

Abigail Pauls, Ignas Lekavicius, Hailin Wang

We report the development of a composite system for cavity QED studies of silicon vacancies in diamond utilizing an ultra thin diamond membrane coupled to a silica microsphere optical resonator with <40 MHz cavity linewidths.

Frontiers in Optics•Jan 1, 2020•1 citation

Atom-Photon Coupling from Nitrogen-vacancy Centers Embedded in Tellurite Microspheres

Yinlan Ruan, Brant C. Gibson, Desmond W. M. Lau +6 more

A technique was developed for creating tellurite microspheres with embedded nanodiamonds. The whispering gallery mode modulated fluorescence of the nitrogen vacancy centers in the nanodiamonds was observed with resonance Q over 10,000.

•Jan 1, 2015•0 citations

Frequency tuning of the whispering-gallery modes of silica microspheres for cavity QED and microscopy.

Wolf von Klitzing, Romain Long, Ilchenko, V., S. +2 more

•Jan 1, 2001•0 citations
For cavity quantum electrodynamics systems (cavity-QED) to play a role in quantum information processing applications and in quantum networks, they must be robust and scalable in addition to having a suitable method for the generation, processing and storage of quantum bits. One solution is to develop a composite system that couples a nitrogen vacancy (NV) center in diamond to a whispering gallery mode supported by a fused silica microsphere. Such a system is motivated by the optical and electron-spin properties of the NV center. The NV center is the leading spin-qubit and exhibits atomic like linewidths at cryogenic temperatures and has spin coherence times greater than milliseconds at room temperature. These long coherence times, coupled with nanosecond scale spin readout and manipulation times, allow for millions of quantum operations to be processed. Silica whispering gallery resonators are the only class of microresonators with quality factor high enough to reach the strong coupling regime, which is necessary for some quantum information processing applications. \n \nIntegrating these two components into a system that could position a diamond nanopillar near the surface of a deformed-double stemmed microsphere system, with nanometer precision, at 10 K was a major achievement of this research. Cavity resonances in deformed microspheres can be excited with a free-space coupling technique which simplifies their integration into cryogenic environments. In these intentionally deformed resonators, an enhanced evanescent field decay length was observed at specific locations along the ray orbit. The double-stem arrangement enables the cavity resonance to be tuned over 450 GHz, with sub-10 MHz resolution, at 10 K. These two features, the enhanced decay length and broad range tuning with high resolution, are indispensible tools for cavity-QED studies with silica microspheres. \n \nDiamond nanopillars were fabricated from single crystal diamond with diameters as small as 140 nm in order to maintain a high quality factor. Studies were conducted on NV centers in nanopillars and bulk diamond to determine their suitability for cavity-QED applications. In an attempt to increase the light-matter interaction between NV centers and whispering gallery modes, diamond substrates were optically characterized that were irradiated with nitrogen ions.