PRACQSYS 2018: Principles and Applications of Control in Quantum Systems

Collection PRACQSYS 2018: Principles and Applications of Control in Quantum Systems

Organizer(s) Brion, Etienne ; Diamanti, Eleni ; Ourjoumtsev, Alexei ; Rouchon, Pierre

Date(s) 02/07/2018 - 06/07/2018

linked URL https://sites.google.com/view/mcqs2018/pracqsys-2018

00:00:00 / 00:00:00

27 29

Quantum thermodynamics of complex systems

By Adolfo del Campo

A universal relation is established between the quantum work probability distribution of an isolated driven quantum system and the Loschmidt echo dynamics of a two-mode squeezed state. When the initial density matrix is canonical, the Loschmidt echo of the purified double thermofield state provides a direct measure of information scrambling and can be related to the analytic continuation of the partition function. Information scrambling is then described by the quantum work statistics associated with the time-reversal operation on a single copy, associated with the sudden negation of the system Hamiltonian. This relation is used characterize the work statistics associated with the driving of chaotic systems as a paradigmatic example of complex quantum systems.

Information about the video

Date of recording 06/07/2018
Date of publication 16/07/2018
Institution IHP
Licence CC BY-NC-ND
Format MP4

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