Pseudomode description of general open quantum systems with applications to thermodynamics
ORAL
Abstract
The pseudomode method has been recognized as a powerful tool for the description of non-Markovian open system dynamics. The technique is based on replacing a bosonic environment with a small set of damped harmonic oscillators - the pseudomodes - thereby mapping the initial system onto a simpler configuration described by a Markovian master equation. In this talk, we present an efficient mapping scheme that combines several key features of previous approaches, enabling the optimal construction of pseudomode networks representing general non-Markovian environments. For special cases involving non-Hermitian system-pseudomode interactions, we also establish general conditions under which the corresponding master equation may be converted into Gorini-Kossakowski-Sudarshan-Lindblad (GKSL) form. Finally, we demonstrate the application of our results by analyzing the performance of a quantum Otto cycle at strong system-bath coupling.
*We acknowledge funding support from the South African Research Chair Initiative, Grant No. 64812 of the Department of Science and Innovation and the National Research Foundation of the Republic of South Africa. Support from the NICIS (National Integrated Cyber Infrastructure System) e-research grant QICSI7 is also kindly acknowledged.
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Presenters
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Graeme Pleasance
- University of Stellenbosch