Analysis on generation schemes of Schrödinger cat-like states under experimental imperfections

Shigenari Suzuki, Kenji Tsujino, Fumihiko Kannari, Masahide Sasaki

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


An analysis and a comparison of two generation schemes of Schrödinger cat-like state including experimental imperfections are presented. Under practical conditions, a scheme using a squeezed vacuum and a photon subtraction will generate a cat-like state with its fidelity to the Schrödinger cat state F = 0.815 and value of its Wigner function at the origin of the phase space W(0,0) = -0.203, and then turned out to be more feasible than the scheme using squeezed single-photon state. The non-classicality of these cat-like states is governed only by non-classical photon number statistics. The criteria for ensuring W(0,0) < 0 are also presented in terms of imperfection parameter diagrams.

Original languageEnglish
Pages (from-to)758-764
Number of pages7
JournalOptics Communications
Issue number2
Publication statusPublished - 2006 Mar 15


  • Cat-like state
  • Non-Gaussian state
  • Photon subtraction
  • Schrödinger cat state
  • Single-photon state
  • Squeezing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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