Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session M03: Defects and Doping in Si, Ge, SiC, and Diamond
8:00 AM–11:00 AM,
Wednesday, March 6, 2024
Room: L100C
Sponsoring
Units:
DMP DCOMP FIAP
Chair: Wennie Wang, University of Texas at Austin
Abstract: M03.00002 : Probing NV and SiV charge state dynamics using high-voltage nanosecond pulse and photoluminescence spectral analysis*
8:36 AM–8:48 AM
Presenter:
Artur Pambukhchyan
(University of Southern California)
Authors:
Artur Pambukhchyan
(University of Southern California)
Sizhe Weng
(University of Southern California)
Indu Aravind
(Univ of Southern California)
Stephen B Cronin
(University of Southern California)
Susumu Takahashi
(Univ of Southern California)
In this presentation, we discuss the charge state dynamics of NV and SiV centers under high-voltage (HV) nanosecond pulse discharges. These voltage-induced changes in charge states are probed by their photoluminescence spectral analysis. The analysis result from the present experiment shows that the HV nanosecond pulses cause shifts of the chemical potential and can convert the charge states of NV and SiV centers with the transition rates of ~MHz. This result also indicates that the major population of the SiV centers in the sample is the doubly negatively charged state (SiV2−), which is often overlooked because of its non-fluorescent and non-magnetic nature. This demonstration paves a path for a method of rapid manipulation of the NV and SiV charge states.
*This research was supported by the National Science Foundation (NSF) Award No. ECCS-2204667 (S W and S B C) and the Army Research Office (ARO) Award No. W911NF2210284 (I A and S B C). A P and S T also thanks the supports from NSF (ECCS-2204667 and CHE-2004252 with partial co-funding from the Quantum Information Science program in the Division of Physics), the USC Anton B Burg Foundation, and the Searle scholars program.
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