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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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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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