Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/37162
Title: Photoelectric Detection of Nitrogen‐Vacancy Centers Magnetic Resonances in Diamond: Role of Charge Exchanges with Other Optoelectrically Active Defects
Authors: BOURGEOIS, Emilie 
SOUCEK, Josef 
HRUBY, Jaroslav 
GULKA, Michal 
NESLADEK, Milos 
Issue Date: 2022
Publisher: WILEY
Source: ADVANCED QUANTUM TECHNOLOGIES, (Art N° 2100153)
Status: Early view
Abstract: The photoelectric detection of nitrogen-vacancy (NV) magnetic resonance (PDMR) in diamond, used for spin state detection and based on reading the photocurrent resulting from NV ionization, offers physical and technical advantages for the development of miniaturized and scalable quantum sensors, as well as solid-state quantum information devices integrated with electronics. Charge exchanges between NV centers and other optoelectrically active defects in diamond are an essential part of the PDMR scheme, impacting the spin-state control and the performances of the photoelectric readout. Through experimental characterization and modeling, processes governing the spin-state contrast, in particular the hole carrier contribution to the photocurrent and the role of acceptor-type defects are discussed. Such acceptor defects can act as traps for free electrons resulting from NV photoionization. Consequently, the hole current can increase at resonance, ultimately leading to an inversion of the sign of PDMR resonances, i.e. to a positive spin contrast. Based on these findings, a method to improve PDMR performances in terms of spin contrast and photoelectric detection rate by selectively ionizing low-energy acceptor defects using a bias red illumination is proposed. This method is shown to lead to a significant improvement of the photoelectric spin detection sensitivity, important for future practical devices.
Notes: Bourgeois, E; Soucek, J; Hruby, J; Gulka, M; Nesladek, M (corresponding author), Hasselt Univ, Martelarenlaan 42, B-3500 Hasselt, Belgium.; Bourgeois, E; Soucek, J; Hruby, J; Gulka, M; Nesladek, M (corresponding author), IMEC, IMOMEC Div, Kapeldreef 75, B-3001 Leuven, Belgium.; Soucek, J; Hruby, J; Gulka, M; Nesladek, M (corresponding author), Czech Tech Univ, Fac Biomed Engn, Sitna Sq 3105, Kladno 27201, Czech Republic.
emilie.bourgeois@uhasselt.be; josef.soucek@uhasselt.be;
jaroslav.hruby@uhasselt.be; gulka.michal@gmail.com;
milos.nesladek@uhasselt.be
Keywords: crystal defects in diamond;charge exchanges;electron spin resonances;nitrogen-vacancy centers;photoelectric detection
Document URI: http://hdl.handle.net/1942/37162
e-ISSN: 2511-9044
DOI: 10.1002/qute.202100153
ISI #: WOS:000769998600001
Rights: 2022 The Authors. Advanced Quantum Technologies published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Category: A1
Type: Journal Contribution
Validations: ecoom 2023
Appears in Collections:Research publications

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