Bulletin of the American Physical Society
APS March Meeting 2021
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session P18: First-Principles Approaches for Quantum Defects
3:00 PM–6:00 PM,
Wednesday, March 17, 2021
Sponsoring Unit: DCOMP
Chair: Chris Van de Walle, University of California, Santa Barbara
Abstract: P18.00002 : Quantum Defects and Recombination in Two Dimensions*
3:36 PM–4:12 PM
We will also discuss our recent development on recombination methods in low-dimensional quantum defects , demonstrating the effect of strain on radiative and phonon-assisted non-radiative lifetimes of defects in hexagonal boron nitride. We will show our recent work on discovery of new 2D quantum defects with strong exciton-defect coupling and fast intersystem crossing rate due to spin-orbit coupling. Lastly, we will briefly show our recently developed methodology to compute spin-phonon relaxation rates from a first-principles density-matrix approach, which is necessary to realize quantum defects as spin qubits and sensors.
 T. J. Smart, F. Wu, M. Govoni, and Y. Ping, Phys. Rev. Materials 2, 124002 (2018).
 F. Wu, A. Galatas, R. Sundararaman, D. Rocca and Y. Ping, Phys. Rev. Materials 1, 071001 (R) (2017)
 F. Wu, T. J. Smart, J. Xu, and Y. Ping, Phys. Rev. B 100, 081407(R) (2019).
 T. J. Smart, K. Li, J. Xu and Y. Ping, under review, arXiv: 2009.02830 (2020).
 J. Xu, A. Habib, S. Kumar, F. Wu, R. Sundararaman, and Y. Ping, Nat. Commun. 11, 2780 (2020).
*We acknowledge the support of National Science Foundation under grant number DMR-1760260 and DMR-1956015.
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