Towards steady state currents in superconducting quantum processors

ORAL

Abstract

A deeper understanding of the emergence of out-of-equilibrium statistical physics, and enhanced ability to control quantum many-body systems with single-site precision, can lead to a new era of quantum transport exploration.

In order to reach that, we focus on a nonequilibrium scenario in which two nonintegrable systems prepared in different states are locally and non-extensively coupled to each other.

We show the emergence of steady-like currents which are well defined and typical. We identify their origin to be from a prethermalization mechanism.

We then discuss a path for the experimental realization of these findings on state-of-the-art experimental setups.

* The authors are grateful to Zala Lenarcic and Lev Vidmar for fruitful discussions. X. X. is grateful for the hospitality of Sichuan Normal University. D. P. acknowledges support from the Ministry of Education of Singapore AcRF MOE Tier-II (Project No. T2MOE2002). C. G. acknowledges support from National Natural Science Foundation of China under Grants No. 11805279, No. 61833010, No. 12074117 and No. 12061131011. The computational work for this article were partially performed on the National Supercomputing Centre, Singapore.

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Publication: Xiansong Xu, Chu Guo, and Dario Poletti, Phys. Rev. A 107, 022220 – Published 21 February 2023
Xiansong Xu, Chu Guo, and Dario Poletti, Phys. Rev. A 105, L040203 – Published 27 April 2022

Presenters

  • dario poletti

    singapore university of technology and design

Authors

  • dario poletti

    singapore university of technology and design

  • Chu Guo

    Hunan Normal University

  • xiansong xu

    singapore university of technology and design