Fast and robust quantum control based on Pauli blocking

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dc.contributor.author Dowdall, Tom
dc.contributor.author Benseny, Albert
dc.contributor.author Busch, Thomas
dc.contributor.author Ruschhaupt, Andreas
dc.date.accessioned 2018-06-15T11:47:06Z
dc.date.available 2018-06-15T11:47:06Z
dc.date.issued 2017
dc.identifier.citation Dowdall, T., Benseny, A., Busch, T. and Ruschhaupt, A. (2017) 'Fast and robust quantum control based on Pauli blocking', Physical Review A, 96(4), 043601 (8pp). doi: 10.1103/PhysRevA.96.043601 en
dc.identifier.volume 96
dc.identifier.issued 4
dc.identifier.startpage 1
dc.identifier.endpage 8
dc.identifier.issn 2469-9926
dc.identifier.uri http://hdl.handle.net/10468/6312
dc.identifier.doi 10.1103/PhysRevA.96.043601
dc.description.abstract Coherent quantum control over many-particle quantum systems requires high-fidelity dynamics. One way of achieving this is to use adiabatic schemeswhere the system follows an instantaneous eigenstate of the Hamiltonian over time scales that do not allow transitions to other states. This, however, makes control dynamics very slow. Here we introduce another concept that takes advantage of preventing unwanted transitions in fermionic systems by using Pauli blocking: excitations from a protected ground state to higher-lying states are avoided by adding a layer of buffer fermions, such that the protected fermions cannot make a transition to higher-lying excited states because these are already occupied. This allows us to speed up adiabatic evolutions of the system. We do a thorough investigation of the technique, and demonstrate its power by applying it to high-fidelity transport, trap expansion, and splitting in ultracold-atom systems in anharmonic traps. Close analysis of these processes also leads to insights into the structure of the orthogonality catastrophe phenomenon. en
dc.description.sponsorship Irish Research Council (GOIPG/2015/3195) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society en
dc.relation.uri https://journals.aps.org/pra/abstract/10.1103/PhysRevA.96.043601
dc.rights © 2017, the Authors. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the Authors. and the published article's title, journal citation, and DOI. en
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Fermi gases en
dc.subject Emission en
dc.title Fast and robust quantum control based on Pauli blocking en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Andreas Ruschhaupt, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: aruschhaupt@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Irish Research Council
dc.contributor.funder Okinawa Institute of Science and Technology Graduate University
dc.description.status Peer reviewed
dc.identifier.journaltitle Physical Review A en
dc.internal.IRISemailaddress aruschhaupt@ucc.ie en
dc.identifier.articleid 43601


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© 2017, the Authors. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the Authors.  and the published article's title, journal citation, and DOI. Except where otherwise noted, this item's license is described as © 2017, the Authors. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the Authors. and the published article's title, journal citation, and DOI.
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