Non-Hermitian matter-wave mixing in Bose-Einstein condensates : Dissipation-induced amplification

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dc.citation.issueNumber1en_US
dc.citation.volumeNumber96en_US
dc.contributor.authorWüster, Sebastianen_US
dc.contributor.authorEl-Ganainy, R.en_US
dc.date.accessioned2018-04-12T11:04:03Z
dc.date.available2018-04-12T11:04:03Z
dc.date.issued2017en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe investigate the nonlinear scattering dynamics in interacting atomic Bose-Einstein condensates under non-Hermitian dissipative conditions. We show that, by carefully engineering a momentum-dependent atomic loss profile, one can achieve matter-wave amplification through four-wave mixing in a quasi-one-dimensional nearly-free-space setup - a process that is forbidden in the counterpart Hermitian systems due to energy mismatch. Additionally, we show that similar effects lead to rich nonlinear dynamics in higher dimensions. Finally, we propose a physical realization for selectively tailoring the momentum-dependent atomic dissipation. Our strategy is based on a two-step process: (i) exciting atoms to narrow Rydberg or metastable excited states, and (ii) introducing loss through recoil; all while leaving the bulk condensate intact due to protection by quantum interference.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T11:04:03Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2017en
dc.identifier.doi10.1103/PhysRevA.96.013605en_US
dc.identifier.issn2469-9926
dc.identifier.urihttp://hdl.handle.net/11693/37144
dc.language.isoEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevA.96.013605en_US
dc.source.titlePhysical Review Aen_US
dc.titleNon-Hermitian matter-wave mixing in Bose-Einstein condensates : Dissipation-induced amplificationen_US
dc.typeArticleen_US

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