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dc.contributor.authorJacquet, Maxime Jules Roland
dc.contributor.authorKoenig, Friedrich Ernst Wilhelm
dc.identifier.citationJacquet , M J R & Koenig , F E W 2015 , ' Quantum vacuum emission from a refractive-index front ' , Physical Review. A, Atomic, molecular, and optical physics , vol. 92 , 023851 .
dc.identifier.otherPURE: 215935792
dc.identifier.otherPURE UUID: 49f55c8f-9a30-4f1c-8d19-020bdeec362d
dc.identifier.otherScopus: 84940750973
dc.identifier.otherWOS: 000360284100011
dc.descriptionThe authors would like to acknowledge useful discussions with S. Finazzi and R. Parentani, as well as support from EPSRC via Grant No. EP/L505079/1.en
dc.description.abstractA moving boundary separating two otherwise homogeneous regions of a dielectric is known to emit radiation from the quantum vacuum. An analytical framework based on the Hopfield model, describing a moving refractive-index step in 1+1 dimensions for realistic dispersive media has been developed by S. Finazzi and I. Carusotto [Phys. Rev. A 87, 023803 (2013)]. We expand the use of this model to calculate explicitly spectra of all modes of positive and negative norms. Furthermore, for lower step heights we obtain a unique set of mode configurations encompassing black-hole and white-hole setups. This leads to a realistic emission spectrum featuring black-hole and white-hole emission for different frequencies. We also present spectra as measured in the laboratory frame that include all modes, in particular a dominant negative-norm mode, which is the partner mode in any Hawking-type emission. We find that the emission spectrum is highly structured into intervals of emission with black-hole, white-hole, and no horizons. Finally, we estimate the number of photons emitted as a function of the step height and find a power law of 2.5 for low step heights.
dc.relation.ispartofPhysical Review. A, Atomic, molecular, and optical physicsen
dc.rights© 2015 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at
dc.subjectFiber opticsen
dc.subjectHawking effecten
dc.subjectEvent horizonen
dc.subjectParametric amplificationen
dc.subjectQC Physicsen
dc.subjectPhysics and Astronomy(all)en
dc.titleQuantum vacuum emission from a refractive-index fronten
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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