Directly observing squeezed phonon states with femtosecond x-ray diffraction

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Show simple item record Johnson, Steve L. Beaud, Paul Vorobeva, Ekaterina Milne, Christopher J. Murray, Éamonn D. Fahy, Stephen B. Ingold, Gerhard 2017-09-08T09:15:48Z 2017-09-08T09:15:48Z 2009
dc.identifier.citation Johnson, S. L., Beaud, P., Vorobeva, E., Milne, C. J., Murray, É. D., Fahy, S. and Ingold, G. (2009) 'Directly observing squeezed phonon states with femtosecond x-ray diffraction', Physical Review Letters, 102(17), 175503 (4pp). doi: 10.1103/PhysRevLett.102.175503 en
dc.identifier.volume 102
dc.identifier.issued 17
dc.identifier.issn 0031-9007
dc.identifier.doi 10.1103/PhysRevLett.102.175503
dc.description.abstract Squeezed states are quantum states of a harmonic oscillator in which the variance of two conjugate variables each oscillate out of phase. Ultrafast optical excitation of crystals can create squeezed phonon states, where the variance of the atomic displacements oscillates due to a sudden change in the interatomic bonding strength. With femtosecond x-ray diffraction we measure squeezing oscillations in bismuth and conclude that they are consistent with a model in which electronic excitation softens all phonon modes by a constant scaling factor. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society en
dc.rights © 2009, American Physical Society en
dc.subject Coherent phonons en
dc.subject Excitation en
dc.subject Solids en
dc.subject Bismuth en
dc.subject Noise en
dc.subject Light|Bi en
dc.title Directly observing squeezed phonon states with femtosecond x-ray diffraction en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Stephen Fahy, Tyndall National Institute, University College Cork, Cork, Ireland. +353-21-490-3000. Email: en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.wokid WOS:000265948300030
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review Letters en
dc.internal.IRISemailaddress en
dc.identifier.articleid 175503

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