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 EE03: V: Semiconductor Qubits
10:00 AM–11:24 AM,
Monday, March 20, 2023
Room: Virtual Room 3
Sponsoring
Unit:
DQI
Chair: Biswajit Datta, City university of New York
Abstract: EE03.00003 : Towards high-fidelity charge state control of the NV center at 100 K
10:24 AM–10:36 AM
Presenter:
Margriet van Riggelen
(Delft University of Technology)
Authors:
Margriet van Riggelen
(Delft University of Technology)
Hans P Bartling
(Delft University of Technology)
Tim Hugo Taminiau
(Delft University of Technology)
Ionization of the NV center from its negative charge state to its neutral form, limits efficiency of the system. Therefore, we have explored and implemented different methods for optical readout and initialization of the charge state of a naturally occurring NV center in an isotopically purified <100> diamond sample. A previously developed model for charge state dynamics of the NV center under 637 nm laser illumination by Shields et al. [1] was adapted and used to quantify and improve the charge state readout at 100 K. Furthermore, we implemented optical charge state initialization. The tools that we developed pave the way for charge state control of the NV center at 100 K, an important prerequisite for eventual operation of an NV center based quantum processor at high temperatures.
[1] B. J. Shields et al. Phys. Rev. Lett. 114, 136402 (2015).
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