Engineering non-Markovianity from defect-phonon interactions

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.

25 pages, 6 figures

References in corpus (8)

• Quantum Non-Markovianity: Characterization, Quantification and Detection
• Fault-tolerant operation of a logical qubit in a diamond quantum processor
• A complete ab initio view of Orbach and Raman spin-lattice relaxation in a Dysprosium coordination compound
• Towards exact predictions of spin-phonon relaxation times: an ab initio implementation of open quantum systems theory
• Quantum non-Markovianity induced by Anderson localization
• Impurity dephasing in a Bose-Hubbard model
• Decoherence-free quantum register of nuclear spins in diamond
• Theoretical study of laser intensity noise effect on CW-STED microscopy