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91探花
Theoretical physicists working at a blackboard collaboration pod in the Beecroft building.
Credit: Jack Hobhouse

Patrik Penc

Graduate Student

Research theme

  • Fields, strings, and quantum dynamics

Sub department

  • Rudolf Peierls Centre for Theoretical Physics

Research groups

  • Condensed Matter Theory
patrik.penc@physics.ox.ac.uk
Rudolf Peierls Centre for Theoretical Physics, room 40.09
  • About
  • Publications

Loss-Induced Quantum Information Jet in an Infinite Temperature Hubbard Chain

Physical Review Letters 133, 190403 (2024)

Authors:

Patrik Penc, C膬t膬lin Pa艧cu Moca, 脰rs Legeza, Toma啪 Prosen, Gergely Zar谩nd, and Mikl贸s Antal Werner

Abstract:

Information propagation in the one-dimensional infinite temperature Hubbard model with a dissipative particle sink at the end of a semi-infinite chain is studied. In the strongly interacting limit, the two-site mutual information and the operator entanglement entropy exhibit a rich structure with two propagating information fronts and superimposed interference fringes. A classical reversible cellular automaton model quantitatively captures the transport and the slow, classical part of the correlations but fails to describe the rapidly propagating information jet. The fast quantum jet resembles coherent free particle propagation, with the accompanying long-ranged interference fringes that are exponentially damped by short-ranged spin correlations in the many-body background.

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