{"title":"Quantum emission of a medium with a time-dependent refractive index","authors":"V. Hizhnyakov","doi":"10.1088/0954-8998/4/5/003","DOIUrl":null,"url":null,"abstract":"Quantum emission of photons caused by sudden change of the refractive index of a medium is considered. This emission appears due to time dependence of the zeroth quantum state of the field and is a non-stationary analogue of the Casimir effect. A model-exact solution of the problem is presented. If sudden changes of the refractive index are caused by excitation of a semiconductor near to a band-to-band transition by a synchroneously pumped subpicosecond dye laser the intensity of the quantum emission is approximately 10-9 W in the infrared. The analogy of the effect with and its difference from, the Hawking and the Unruh radiations are discussed.","PeriodicalId":130003,"journal":{"name":"Quantum Optics: Journal of The European Optical Society Part B","volume":"56 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"31","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Quantum Optics: Journal of The European Optical Society Part B","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/0954-8998/4/5/003","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 31
Abstract
Quantum emission of photons caused by sudden change of the refractive index of a medium is considered. This emission appears due to time dependence of the zeroth quantum state of the field and is a non-stationary analogue of the Casimir effect. A model-exact solution of the problem is presented. If sudden changes of the refractive index are caused by excitation of a semiconductor near to a band-to-band transition by a synchroneously pumped subpicosecond dye laser the intensity of the quantum emission is approximately 10-9 W in the infrared. The analogy of the effect with and its difference from, the Hawking and the Unruh radiations are discussed.