Non-classicality of photon added coherent and thermal radiations

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dc.creatorDevi, A. R. Usha
dc.creatorPrabhu, R.
dc.creatorUma, M. S.
dc.date2006-02-07
dc.date2006-04-26
dc.date.accessioned2026-07-07T07:51:44Z
dc.date.available2026-07-07T07:51:44Z
dc.descriptionProduction and analysis of non-Gaussian radiation fields has evinced a lot of attention recently. Simplest way of generating such non-Gaussians is through adding (subtracting) photons to Gaussian fields. Interestingly, when photons are added to classical Gaussian fields, the resulting states exhibit {\em non-classicality}. Two important classical Gaussian radiation fields are coherent and thermal states. Here, we study the non-classical features of such states when photons are added to them. Non-classicality of these states shows up in the negativity of the Wigner function. We also work out the {\em entanglement potential}, a recently proposed measure of non-classicality for these states. Our analysis reveals that photon added coherent states are non-classical for all seed beam intensities; their non-classicality increases with the addition of more number of photons. Thermal state exhibits non-classicality at all temperatures, when a photon is added; lower the temperature, higher is their non-classicality.
dc.descriptionVersion 2, minor revision; new references added, to appear in Eur. Phys. J. D, 6 pages, 10 figure ps files, RevTeX
dc.identifierhttps://arxiv.org/abs/quant-ph/0602071
dc.identifierhttp://arxiv.org/abs/quant-ph/0602071
dc.identifierEur. Phys. J. D 40, 133-138 (2006)
dc.identifierdoi:10.1140/epjd/e2006-00135-x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/125624
dc.subjectQuantum Physics
dc.titleNon-classicality of photon added coherent and thermal radiations
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