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arXiv · 2211.13782

Engineering non-Markovianity from defect-phonon interactions

Francisco J. González·Diego Tancara·Hossein T. Dinani·Raúl Coto·Ariel Norambuena
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Abstract

Understanding defect-phonon interactions in solid-state devices is crucial for improving our current knowledge of quantum platforms. In this work, we develop first-principles calculations for a defect composed of two spin-$1/2$ particles that interact with phonon modes in a one-dimensional lattice. We follow a bottom-up approach that begins with a dipolar magnetic interaction to ultimately derive the spectral density function and time-local master equation that describes the open dynamics of the defect. We provide theoretical and numerical analysis for the non-Markovian features of the defect-phonon dynamics induced by a pure dephasing channel acting on the Bell basis. Finally, we analyze two measures of non-Markovianity based on the canonical rates and Coherence, shedding more light on the role of the spectral density function and temperature; and envisioning experimental realizations.

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Francisco J. González, Diego Tancara, Hossein T. Dinani, Raúl Coto, Ariel Norambuena. 2022-11-24. Engineering non-Markovianity from defect-phonon interactions. https://doi.org/10.1088/1367-2630%2Facc7bf

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