Spontaneous emission in ultracold spin-polarized anisotropic Fermi seas

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dc.contributor.author O'Sullivan, Brian
dc.contributor.author Busch, Thomas
dc.date.accessioned 2017-08-25T10:08:52Z
dc.date.available 2017-08-25T10:08:52Z
dc.date.issued 2009
dc.identifier.citation O’Sullivan, B. and Busch, T. (2009) 'Spontaneous emission in ultracold spin-polarized anisotropic Fermi seas', Physical Review A, 79(3), 033602 (7pp). doi: 10.1103/PhysRevA.79.033602 en
dc.identifier.volume 79
dc.identifier.issued 3
dc.identifier.issn 1050-2947
dc.identifier.uri http://hdl.handle.net/10468/4538
dc.identifier.doi 10.1103/PhysRevA.79.033602
dc.description.abstract We examine and explain the spatial emission patterns of ultracold excited fermions in highly anisotropic trapping potentials in the presence of a spin-polarized Fermi sea of ground-state atoms. Due to the Pauli principle, the Fermi sea modifies the available phase space for the recoiling atom. This leads to the well-known modification of the atomic decay rate, but also to a spatial modulation in the probability of the emitted photon's direction. In this work we carry out the first detailed investigation into these spatial anisotropies and show that they are due to an intricate interplay between Fermi energies and degeneracy values of specific energy levels. We identify different regimes and show that the emission can be engineered to become highly directional. As the latter is usually only possible in cavity settings, our results describe an alternative idea for a directional photon source. en
dc.description.sponsorship Science Foundation Ireland (05/IN/I852); Irish Research Council for Science, Engineering and Technology (Embark Initiative (RS/2006/172) 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.79.033602
dc.rights © 2009, American Physical Society en
dc.subject Gas en
dc.subject Atoms en
dc.title Spontaneous emission in ultracold spin-polarized anisotropic Fermi seas en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Brian O'Sullivan, Physics, University College Cork, Cork, Ireland. +353-21-490-3000. Email: bosullivan@phys.ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.wokid WOS:000264770200132
dc.contributor.funder Irish Research Council for Science, Engineering and Technology
dc.contributor.funder Science Foundation Ireland
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review A en
dc.internal.IRISemailaddress bosullivan@phys.ucc.ie en
dc.identifier.articleid 33602

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