Signatures of the pair-coherent state

A. Gilchrist*, W. J. Munro

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


We explore in detail the possibility of generating a pair-coherent state in the nondegenerate parametric oscillator when decoherence is included. Such states are predicted in the transient regime in parametric oscillation where the pump mode is adiabatically eliminated. Two specific signatures are examined to indicate whether the state of interest has been generated, the Schrodinger cat state - like signatures, and the fidelity. Solutions in a transient regime reveal interference fringes which are indicative of the formation of a Schrodinger cat state. The fidelity indicates the purity of our prepared state compared with the ideal pair-coherent state.

Original languageEnglish
Pages (from-to)47-52
Number of pages6
JournalJournal of Optics B: Quantum and Semiclassical Optics
Issue number1
Publication statusPublished - Feb 2000
Externally publishedYes


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