Suppression of the optical linewidth and spin decoherence of a quantum spin center in a $p$$-$$n$ diode

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 in Anderson et al., Science 366, 1225 (2019). We connect the local electric field with the voltage across the diode, allowing for 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 bi-exponential decoherence process, and predict how reduced charge fluctuation noise suppresses the spin center's decoherence rate.

17 pages, 9 figures

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Cited by in corpus (7)

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• Theory of spin center sensing of diffusion
• Laser-induced spectral diffusion of T centers in silicon nanophotonic devices
• Spectral broadening of a single Er${}^{3+}$ ion in a Si nano-transistor
• Check-probe spectroscopy of lifetime-limited emitters in bulk-grown silicon carbide
• Genuine $k$-partite correlations and entanglement in the ground state of the Dicke model for interacting qubits
• Quantum simulation of spin-1/2 XYZ model using solid-state spin centers