|Nazwa||Seminaria robocze kwantowej informacji i komputerów kwantowych|
|Tytuł||Out-of-time-ordered correlation functions in open systems|
Recent theoretical and experimental studies have shown significance of quantum information scrambling for problems encountered in high-energy physics, quantum information, and condensed matter. Due to complexity of quantum many-body systems it is plausible that new developments in this field will be achieved by experimental explorations. Therefore, a better theoretical understanding of quantum information scrambling in systems affected by noise is needed. To address this problem I will discuss indicators of quantum scrambling - out-of-time-ordered correlation functions (OTOCs) in open quantum systems. As most experimental protocols for measuring OTOCs are based on backward time evolution, two possible scenarios of joint system-environment dynamics reversal will be considered. Derivation of general formulas for OTOCs in those cases as well as a study of the spin chain model coupled to the environment of harmonic oscillators will be presented.
The talk will be based on the paper:
J. Tuziemski, Phys. Rev. A 100, 062106 (2019)
Zoom meeting details
Topic: Quantum Information and Quantum Computing Working Group
Time: May 21, 2020, 04:00 PM Warsaw
If you encounter any problems with connecting to the Zoom meeting, please email firstname.lastname@example.org directly.
|Czas||Czwartek, 21 maj 2020, godz. 16:00 CEST Seminarium odbyło się!|
Jan Tuziemski (Stockholm University & Nordita)
|Organizatorzy||Michał Oszmaniec; Filip Maciejewski;|