Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session W33: Quantum Thermalization
3:00 PM–6:00 PM,
Thursday, March 9, 2023
Room: Room 225
Sponsoring
Unit:
DCMP
Chair: Michael Gullans, Joint Center for Quantum Information and Computer Science
Abstract: W33.00015 : Quantum thermodynamics at strong system-reservoir coupling*
5:48 PM–6:00 PM
Presenter:
Nicholas Anto-Sztrikacs
(University of Toronto)
Authors:
Nicholas Anto-Sztrikacs
(University of Toronto)
Ahsan Nazir
(University of Manchester)
Dvira Segal
(University of Toronto)
I will present our efforts to push beyond these limitations and develop a general, transparent, and efficient theory for strong coupling thermodynamics. By combining the RC mapping with a polaron transformation, followed by a truncation of the Hamiltonian, we relocate strong coupling effects from the bath into the energy parameters of the system, ending with a computationally tractable expression for an ``effective" Hamiltonian. We exemplified the power of this approach on canonical models for quantum thermalization, quantum heat transport, and energy conversion devices. We showed that the effective Hamiltonian method is numerically accurate and that it gathers analytical insights into strong coupling effects.
*Ontario Graduate Scholarship, NSERC discovery Grant, and the Canada Research Chair Program
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