Nonclassicality of a photon-subtracted Gaussian field

Myung Kim

Research output: Contribution to journalArticlepeer-review

130 Citations (Scopus)


We investigate the nonclassicality of a photon-subtracted Gaussian field, which was produced in a recent experiment, using negativity of the Wigner function and the nonexistence of well-behaved positive P function. We obtain the condition to see negativity of the Wigner function for the case including the mixed Gaussian incoming field, the threshold photodetection and the inefficient homodyne measurement. We show how similar the photon-subtracted state is to a superposition of coherent states.
Original languageEnglish
Article number043805
Pages (from-to)043805-043805
Number of pages1
JournalPhysical Review A
Issue number4
Publication statusPublished - Apr 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)


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