Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session G71: Quantum Sensing using Electronic States
11:30 AM–2:30 PM,
Tuesday, March 7, 2023
Room: Room 407/408
Sponsoring
Unit:
DQI
Chair: Leon Bello, Princeton University
Abstract: G71.00001 : Integrated diamond nanostructures for quantum magnetometry*
11:30 AM–11:42 AM
Presenter:
Alexandre Guilbault
(Université de Sherbrooke)
Authors:
Alexandre Guilbault
(Université de Sherbrooke)
Dominic Lepage
(Université de Sherbrooke)
Vincent Halde
(SBQuantum)
Sylvain Nicolay
(Université de Sherbrooke)
David Roy-Guay
(SBQuantum)
Dominique Drouin
(Université de Sherbrooke)
Michel Pioro-Ladrière
(Universite de Sherbrooke)
While there are many techniques available to measure magnetic field using NV centers, continuous wave Optically Detected Magnetic Resonance (cw-ODMR) is often used for its simplicity of implementation. Measurements are carried out by exciting the NV centers with a green laser and monitoring their red photoluminescence under different microwave excitations. However, the magnetic field sensitivity of these devices is not competitive with the best magnetometers currently available.
The goal of this project is to improve the sensitivity of diamond magnetometers by fabricating microstructures out of the diamond hosting the NV centers. This talk details how these structures focus optical power, resulting in multiple orders of magnitude improvement in magnetic sensitivity. Our approach thus enables practical and competitive applications for diamond-based magnetometers.
*NSERC Alliance Grants (ALLRP 556328 - 20) entitled "Canada-UK Quantum Technologies call: Advanced Manufacturing Toolkit for Quantum Sensing and Quantum Computing" FRQNT’s Doctoral Research Scholarships (# 317110)
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