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东南大学学报：英文版

HIGHER－ORDER SQUEEZING FOR THE STATES GENERATED BY EXCITATIONS ON A SQUEEZED VACUUM STATE

Zhongxi Zhang, 范洪义

Published Jan 1, 1994• 0 citations
OpenAlex

Abstract

ＨＩＧＨＥＲ－ＯＲＤＥＲＳＱＵＥＥＺＩＮＧＦＯＲＴＨＥＳＴＡＴＥＳＧＥＮＥＲＡＴＥＤＢＹＥＸＣＩＴＡＴＩＯＮＳＯＮＡＳＱＵＥＥＺＥＤＶＡＣＵＵＭＳＴＡＴＥＺｈａｎｇＺｈｏｎｇｘｉ，（张中熙）；ＦａｎＨｏｎｇｙｉ（范洪义）（ＤｅｐａｒｔｎｉｅｎｔｏｆＰ...

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ＨＩＧＨＥＲ－ＯＲＤＥＲＳＱＵＥＥＺＩＮＧＦＯＲＴＨＥＳＴＡＴＥＳＧＥＮＥＲＡＴＥＤＢＹＥＸＣＩＴＡＴＩＯＮＳＯＮＡＳＱＵＥＥＺＥＤＶＡＣＵＵＭＳＴＡＴＥＺｈａｎｇＺｈｏｎｇｘｉ，（张中熙）；ＦａｎＨｏｎｇｙｉ（范洪义）（ＤｅｐａｒｔｎｉｅｎｔｏｆＰ...
By making use of thermo-field dynamics(TFD),higher-order fluctuations and higher-order squeezing of quadrature components for coherent states and squeezed states with thermal noise have been studied.The higher-order fluctuations of the phase for these thermalized states have been investigated using the concept of measured phase operators.Thus the dependence of the lower-and higher-order fluctuations and squeezing on temperature in these states at finite temperature can be seen.It is significant to discuss the effect of temperature on the fluctuations and squeezing,since the states of real field are always at finite temperatures.