Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session D70: Quantum Sensing using Diamonds
3:00 PM–6:00 PM,
Monday, March 6, 2023
Room: Room 409
Sponsoring
Unit:
DQI
Chair: Gabriel Landi, University of Rochester
Abstract: D70.00008 : Enhancement of NV-center coherence times via suppression of the surface noise in coated nanodiamonds.*
4:24 PM–4:36 PM
Presenter:
Denis R Candido
(University of Iowa)
Authors:
Denis R Candido
(University of Iowa)
Uri Zvi
(University of Chicago)
Peter C Maurer
(University of Chicago)
Michael E Flatté
(University of Iowa)
In this work we first model and study the relevant noise sources for NVs implanted within nanodiamonds. Furthermore, we theoretically obtain the signatures of both surface and bulk noises on the evolution of NV-coherence. By contrasting these findings with our experimental data, we show that while the surface noise is the dominant source for bare nanodiamonds, silica-coated nanodimamonds show a dominant bulk noise source, thus evidencing a surface noise suppression via coating processes. This suppression produces a 3.5-fold increase in the NV-coherence time, thus opening a path for enhancing the sensitivity of NV in nanodiamond.
*DRC and MEF: The work was supported as part of the Center for Molecular Quantum Transduction, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under Award Number DE-SC0021314.UZ and PCM: The work was supported by NSF QuBBE QLCI (NSF OMA- 2121044).
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