{"title":"单模位移压缩真空态的量子性质","authors":"A. Getahun","doi":"10.7176/apta/82-01","DOIUrl":null,"url":null,"abstract":"The displaced squeezed vacuum state is produced by application of displaced operator on squeezed vacuum state. With help of density operator we find Q function, with the Q function mean, variance and quadrature variance would be calculated. From this we can determine the system has superpoissonian statics, the squeezed parameter is direct proportion with both mean and variance of photon number, but inversely proportion with quadrature variance. The squeezing occurs in plus quadrature with the maximum squeezing of 99.7% for r=3. Keywords: Quantum nature, displaced state, squeezed vacuum state DOI : 10.7176/APTA/82-01 Publication date: January 31 st 2020","PeriodicalId":7386,"journal":{"name":"Advances in Physics Theories and Applications","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Quantum Natures of Single-Mode Displaced Squeezed Vacuum State\",\"authors\":\"A. Getahun\",\"doi\":\"10.7176/apta/82-01\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The displaced squeezed vacuum state is produced by application of displaced operator on squeezed vacuum state. With help of density operator we find Q function, with the Q function mean, variance and quadrature variance would be calculated. From this we can determine the system has superpoissonian statics, the squeezed parameter is direct proportion with both mean and variance of photon number, but inversely proportion with quadrature variance. The squeezing occurs in plus quadrature with the maximum squeezing of 99.7% for r=3. Keywords: Quantum nature, displaced state, squeezed vacuum state DOI : 10.7176/APTA/82-01 Publication date: January 31 st 2020\",\"PeriodicalId\":7386,\"journal\":{\"name\":\"Advances in Physics Theories and Applications\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Physics Theories and Applications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.7176/apta/82-01\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Physics Theories and Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.7176/apta/82-01","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Quantum Natures of Single-Mode Displaced Squeezed Vacuum State
The displaced squeezed vacuum state is produced by application of displaced operator on squeezed vacuum state. With help of density operator we find Q function, with the Q function mean, variance and quadrature variance would be calculated. From this we can determine the system has superpoissonian statics, the squeezed parameter is direct proportion with both mean and variance of photon number, but inversely proportion with quadrature variance. The squeezing occurs in plus quadrature with the maximum squeezing of 99.7% for r=3. Keywords: Quantum nature, displaced state, squeezed vacuum state DOI : 10.7176/APTA/82-01 Publication date: January 31 st 2020
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