Dynamical disentangling and cooling of atoms in bilayer optical lattices

Kantian, A. and Langer, S. and Daley, A. J. (2018) Dynamical disentangling and cooling of atoms in bilayer optical lattices. Physical Review Letters, 120 (6). 060401. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.120.060401)

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Abstract

We show how experimentally available bilayer lattice systems can be used to prepare quantum many-body states with exceptionally low entropy in one layer, by dynamically disentangling the two layers. This disentangling operation moves one layer - subsystem A - into a regime where excitations in A develop a single-particle gap. As a result, this operation maps directly to cooling for subsystem A, with entropy being shuttled to the other layer. For both bosonic and fermionic atoms, we study the corresponding dynamics showing that disentangling can be realized cleanly in ongoing experiments. The corresponding entanglement entropies are directly measurable with quantum gas microscopes, and, as a tool for producing lower-entropy states, this technique opens a range of applications beginning with simplifying production of magnetically ordered states of bosons and fermions.

  • Item type:Article
    ID code:63511
    Dates:
    Date
    Event
    9 February 2018
    Published
    5 February 2018
    Published Online
    12 December 2017
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:20 Mar 2018 16:43
    Last modified:11 Apr 2024 01:28
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/63511
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