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Author:

Lv Chenwei (Lv Chenwei.) | Zhang Ren (Zhang Ren.) | Zhou Qi (Zhou Qi.)

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Abstract:

Though the celebrated spin echoes have been widely used to reverse quantum dynamics, they are not applicable to systems whose constituents are beyond the control of the su(2) algebra. Here, we design echoes to reverse quantum dynamics of breathers in three-dimensional unitary fermions and two-dimensional bosons and fermions with contact interactions, which are governed by an underlying su(1,1) algebra. Geometrically, SU(1,1) echoes produce closed trajectories on a single or multiple Poincaré disks and thus could recover any initial states without changing the sign of the Hamiltonian. In particular, the initial shape of a breather determines the superposition of trajectories on multiple Poincaré disks and whether the revival time has period multiplication. Our work provides physicists with a recipe to tailor collective excitations of interacting many-body systems.

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Author Community:

  • [ 1 ] [Lv Chenwei]Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
  • [ 2 ] [Zhang Ren]Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
  • [ 3 ] [Zhou Qi]Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA

Reprint Author's Address:

  • [Zhou, Qi]Department of Physics and Astronomy, Purdue University, West Lafayette; IN; 47907, United States;;[Zhou, Qi]Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette; IN; 47907, United States;;

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Source :

Physical review letters

ISSN: 1079-7114

Year: 2020

Issue: 25

Volume: 125

Page: 253002

9 . 1 6 1

JCR@2020

9 . 1 6 1

JCR@2020

ESI Discipline: PHYSICS;

ESI HC Threshold:54

CAS Journal Grade:1

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ESI Highly Cited Papers on the List: 0 Unfold All

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30 Days PV: 0

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