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

“Pick and place” Positioning of diamond nanocrystals on microcavities

Paul E. Barclay, Oskar J. Painter, Charles Santori, Kai‐Mei C. Fu, Raymond G. Beausoleil

Published May 4, 2008• 1 citation
Publisher

Abstract

Diamond nanocrystals are deterministically positioned on high-Q SiO2 microdisks using a fiber taper. The fiber taper is then used to collect cavity modified NV- nanocrystal emission.
DOI
10.1109/qels.2008.4553008

Related papers

Efficient Fiber Collection of Nitrogen-Vacancy Center Emission from Diamond Nano Beams

Harishankar Jayakumar, Behzad Khanaliloo, Paul E. Barclay

We present tapered diamond nano beams, which allows efficient collection of diamond nitrogen vacancy emission through phase-matched coupling to a tapered optical fiber.

•Jan 1, 2015•0 citations

Coupling single NV centers in diamond to optical microcavities

Kai‐Mei C. Fu, Charles Santori, S. M. Spillane +6 more

Coupling of the NV-ZPL to a silica microcavity and tapered fiber is demonstrated at cryogenic temperatures. Coupling to a high-Q cavity should enhance the usefulness of the NV-for quantum information applications.

Conference on Lasers and Electro-Optics•May 1, 2008•5 citations

On-demand positioning of a preselected quantum emitter on a fiber-coupled toroidal microresonator

Markus Gregor, Rico Henze, Tim Schröder +1 more

The coupling of a quantum emitter to the modes of a silica toroid is presented. A fiber taper is used to manipulate and transfer a preselected diamond nanocrystal onto the toroid. Optical coupling of few nitrogen vacancy (NV) color centers contained inside the nanocrystal to the resonator modes is demonstrated by detecting the fluorescence via a tapered optical fiber coupler. A clear antibunching in the photon correlation measurement is observed indicating emission from only six NV centers residing inside the nanocrystal. The latter is confirmed by a photoluminescence spectrum at liquid helium temperature resolving individual zero phonon lines.

Applied Physics Letters•Oct 12, 2009•36 citations

Photon antibunching from diamond nitrogen-vacancy centers inside a dielectric micropillar cavity

Katja Beha, Anton Batalov, Hauke Harms +6 more

Diamond nanocrystals with single nitrogen-vacancy color centers are incorporated into dielectric micropillar resonators. We observe three-dimensional light confinement and antibunching in the photon emission.

Conference on Lasers and Electro-Optics•Jan 1, 2011•0 citations

Coherent interference effects in a nano-assembled diamond NV center cavity-QED system

Paul E. Barclay, Charles Santori, Kai‐Mei C. Fu +2 more

Diamond nanocrystals containing NV color centers are positioned with 100-nanometer-scale accuracy in the near-field of a high-Q SiO(2) microdisk cavity using a fiber taper. The cavity modified nanocrystal photoluminescence is studied, with Fano-like quantum interference features observed in the far-field emission spectrum. A quantum optical model of the system is proposed and fit to the measured spectra, from which the NV(-) zero phonon line coherent coupling rate to the microdisk is estimated to be 28 MHz for a nearly optimally placed nanocrystal.

arXiv:0812.4505•Optics Express•Apr 29, 2009•162 citations

Fiber-taper collected emission from NV centers in high-Q/V diamond microdisks

Tamiko Masuda, John Patrick Hadden, David P. Lake +3 more

Fiber-coupled microdisks are a promising platform for enhancing the spontaneous emission from color centers in diamond. The measured cavity-enhanced emission from the microdisk is governed by the effective volume ( V ) of each cavity mode, the cavity quality factor ( Q ), and the coupling between the microdisk and the fiber. Here we observe room temperature photoluminescence from an ensemble of nitrogen-vacancy centers into high Q / V microdisk modes, which when combined with coherent spectroscopy of the microdisk modes, allows us to elucidate the relative contributions of these factors. The broad emission spectrum acts as an internal light source facilitating mode identification over several cavity free spectral ranges. Analysis of the fiber taper collected microdisk emission reveals spectral filtering both by the cavity and the fiber taper, the latter of which we find preferentially couples to higher-order microdisk modes. Coherent mode spectroscopy is used to measure Q ∼ 1 × 10 5 – the highest reported values for diamond microcavities operating at visible wavelengths. With realistic optimization of the microdisk dimensions, we predict that Purcell factors of ∼50 are within reach.

arXiv:2310.04487•Optics Express•Dec 4, 2023•12 citations
The coupling of a quantum emitter to the modes of a silica toroid is presented. A fiber taper is used to manipulate and transfer a preselected diamond nanocrystal onto the toroid. Optical coupling of few nitrogen vacancy (NV) color centers contained inside the nanocrystal to the resonator modes is demonstrated by detecting the fluorescence via a tapered optical fiber coupler. A clear antibunching in the photon correlation measurement is observed indicating emission from only six NV centers residing inside the nanocrystal. The latter is confirmed by a photoluminescence spectrum at liquid helium temperature resolving individual zero phonon lines.
Diamond nanocrystals containing NV color centers are positioned with 100-nanometer-scale accuracy in the near-field of a high-Q SiO(2) microdisk cavity using a fiber taper. The cavity modified nanocrystal photoluminescence is studied, with Fano-like quantum interference features observed in the far-field emission spectrum. A quantum optical model of the system is proposed and fit to the measured spectra, from which the NV(-) zero phonon line coherent coupling rate to the microdisk is estimated to be 28 MHz for a nearly optimally placed nanocrystal.
Fiber-coupled microdisks are a promising platform for enhancing the spontaneous emission from color centers in diamond. The measured cavity-enhanced emission from the microdisk is governed by the effective volume ( V ) of each cavity mode, the cavity quality factor ( Q ), and the coupling between the microdisk and the fiber. Here we observe room temperature photoluminescence from an ensemble of nitrogen-vacancy centers into high Q / V microdisk modes, which when combined with coherent spectroscopy of the microdisk modes, allows us to elucidate the relative contributions of these factors. The broad emission spectrum acts as an internal light source facilitating mode identification over several cavity free spectral ranges. Analysis of the fiber taper collected microdisk emission reveals spectral filtering both by the cavity and the fiber taper, the latter of which we find preferentially couples to higher-order microdisk modes. Coherent mode spectroscopy is used to measure Q ∼ 1 × 10 5 – the highest reported values for diamond microcavities operating at visible wavelengths. With realistic optimization of the microdisk dimensions, we predict that Purcell factors of ∼50 are within reach.