Factorisation of analytic representations in the unit disk and number - phase statistics of a quantum harmonic oscillator

نویسندگان

  • A Vourdas
  • C Brif
  • A Mann
چکیده

The inner-outer part factorisation of analytic representations in the unit disk is used for an effective characterisation of the number-phase statistical properties of a quantum harmonic oscillator. It is shown that the factorisation is intimately connected to the number-phase Weyl semigroup and its properties. In the Barut-Girardello analytic representation the factorisation is implemented as a convolution. Several examples are given which demonstrate the physical significance of the factorisation and its role for quantum statistics. In particular, we study the effect of phase-space interference on the factorisation properties of a superposition state.

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تاریخ انتشار 1996