Quantum noise in amplification and attenuation

M. S. Kim, K. Cho, J. Janszky, N. Imoto

Research output: Contribution to journalArticle


The reservoir can be modelled by an infinite array of beam splitters and the superposition of input fields in a lossless beam splitter can be described by the convolution of quasiprobability functions. We use the convolution relation and the beam splitter model to derive the Fokker-Planck equation for a system coupled with a phase-sensitive reservoir. Solving the Fokker-Planck equation, we test the coincidence of the loss of well-known nonclassical properties with the appearance of the positive well-defined Glauber-Sudarshan P function.

Original languageEnglish
Pages (from-to)277-287
Number of pages11
JournalActa Physica Slovaca
Issue number3
Publication statusPublished - Jun 1 1996

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Quantum noise in amplification and attenuation'. Together they form a unique fingerprint.

  • Cite this

    Kim, M. S., Cho, K., Janszky, J., & Imoto, N. (1996). Quantum noise in amplification and attenuation. Acta Physica Slovaca, 46(3), 277-287.