Large-amplitude coherent-state superposition generated by a time-separated two-photon subtraction from a continuous-wave squeezed vacuum

Masahiro Takeoka, Hiroki Takahashi, Masahide Sasaki

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

A theoretical analysis is given for a two-photon subtraction from a continuous-wave squeezed vacuum with finite time separation between two detection events. In the cw photon subtraction process, generated states are inevitably described by temporal multimode states. Our approach is based on analytical formulas that are mathematically simple and provide an intuitive understanding of the multimode structure of the system. We show that, in our process, the photon-subtracted squeezed vacuum is generated in two temporal modes and one of these modes acts as an ancillary mode to make the other one a large-amplitude coherent-state superposition.

Original languageEnglish
Article number062315
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume77
Issue number6
DOIs
Publication statusPublished - 2008 Jun 12
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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