On classical properties of thermal squeezed states

A. Mann, M. Revzen, H. Umezawa, Y. Yamanaka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The authors use the formalism of thermo field dynamics and the classical Cramer's theorem to show that if two quantum systems are prepared independently and their centre of mass is found to be a thermal squeezed state, then both systems were prepared in thermal squeezed states. This constitutes an alternative derivation of the quantum version of Cramer's theorem. Further, they consider the case of two systems that are prepared independently and their centre of mass is in a pure state in the expanded space of thermo field dynamics. In this case it is shown that the system is also separable in the centre of mass and relative coordinates, and again all the states involved are thermal squeezed states.

Original languageEnglish
Article number016
Pages (from-to)4527-4533
Number of pages7
JournalJournal of Physics A: Mathematical and General
Volume24
Issue number19
DOIs
Publication statusPublished - 1991 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'On classical properties of thermal squeezed states'. Together they form a unique fingerprint.

  • Cite this