Suppression of the Optical Linewidth and Spin Decoherence of a Quantum Spin Center in ap-nDiode,PRX Quantum

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Suppression of the Optical Linewidth and Spin Decoherence of a Quantum Spin Center in ap-nDiode
PRX Quantum ( IF 9.3 ) Pub Date : 2021-10-15 , DOI: 10.1103/prxquantum.2.040310
Denis R. Candido _{1,

2} , Michael E. Flatté _{1,

2,

3}

Affiliation

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.

中文翻译：

ap-n二极管中量子自旋中心的光学线宽和自旋退相干的抑制

我们提出了一个定量理论，用于抑制由于电荷波动噪声引起的光学线宽

p

n

二极管，最近由 Anderson等人观察到。[科学 366, 1225 (2019)]。我们将局部电场与二极管两端的电压连接起来，从而可以从实验阈值电压中识别缺陷深度。此外，我们表明，对此类自旋中心退相干的准确描述需要一个完整的自旋 1 形式，产生一个双指数退相干过程，并预测电荷波动噪声的降低如何抑制自旋中心的退相干率。

更新日期：2021-10-15

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