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Suppression of the Optical Linewidth and Spin Decoherence of a Quantum Spin Center in a p-n Diode
Journal article   Open access   Peer reviewed

Suppression of the Optical Linewidth and Spin Decoherence of a Quantum Spin Center in a p-n Diode

Denis R. Candido and Michael E. Flatte
PRX quantum, Vol.2(4), p.040310
12/01/2021
DOI: 10.1103/PRXQuantum.2.040310
url
https://doi.org/10.1103/PRXQuantum.2.040310View
Published (Version of record) Open Access

Abstract

We present a quantitative theory of the suppression of the optical linewidth due to charge fluctuation noise in a p-n diode, recently observed by Anderson et al. [Science 366, 1225 (2019)]. We connect the local electric field with the voltage across the diode, allowing the identification of the defect depth from the experimental threshold voltage. Furthermore, we show that an accurate description of the decoherence of such spin centers requires a complete spin-1 formalism that yields a biexponential decoherence process, and predict how reduced charge fluctuation noise suppresses the spin center's decoherence rate.
Physical Sciences Physics Physics, Applied Physics, Multidisciplinary Quantum Science & Technology Science & Technology

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