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Dynamical Disentangling and Cooling of Atoms in Bilayer Optical Lattices
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2018 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 120, no 6, article id 060401Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 120, no 6, article id 060401
National Category
Condensed Matter Physics Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-224032DOI: 10.1103/PhysRevLett.120.060401ISI: 000424092100001Scopus ID: 2-s2.0-85041856186OAI: oai:DiVA.org:kth-224032DiVA, id: diva2:1191789
Note

QC 20180320

Available from: 2018-03-20 Created: 2018-03-20 Last updated: 2018-03-20Bibliographically approved

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Kantian, Adrian

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