Dynamics of closed quantum systems under stochastic resetting
Por:
Sevilla, Francisco J., Valdes-Hernandez, Andrea
Publicada:
20 ene 2023
Resumen:
We consider a closed quantum system subject to a stochastic resetting
process. The generic expression for the resulting density operator is
formulated for arbitrary resetting dynamics, fully characterised by the
distribution of times between consecutive reset events. We analyse the
behaviour of the state in the long-time regime, as well as the evolution
of relevant quantities in the study of quantum coherence and closed-
versus open-system dynamics. Our general results are complemented with
examples involving particular resetting distributions, and special
attention is paid to the two-level (qubit) system, in which we elucidate
the effects of the renewal process on the speed of evolution toward an
orthogonal state, and gain insight into the resetting applied to open
systems.
Filiaciones:
Sevilla, Francisco J.:
Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, Ciudad de México, 01000, Mexico
Valdes-Hernandez, Andrea:
Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, Ciudad de México, 01000, Mexico
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