Noise of a Nonlinear Quantum Amplifier

  • Dmitri Kouznetsov
  • Daniel Rohrlich
Conference paper

Abstract

A general model for nonlinear amplification of a Single field mode involves the bosonic degree of freedom of the field mode. plus other degrees of freedom describing the amplifier. The state in which the amplifier is prepared. and the initial state of the field. are uncorrelated. (The amplifier cannot anticipate the field state.) During amplification, the field and amplifier evolve according to a unitary transformation. and in the transformed state the field and amplifier are correlated. Correlations increase die noise in the amplified field. but without thew there could be no amplification at all.

Keywords

Coherent State Unitary Transformation Field Mode Ampli Fication Minimal Noise 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    H.A. Haus, J. A. Mullen. Qnaiitinn uofso liiuits in liner amplifiers. Phys. Rec. 128: 2107 (1962).CrossRefGoogle Scholar
  2. 2.
    M. Caves. Quantum limit of noise in linear amplifiers. Phys. Rec. D26: 1817 (1982).Google Scholar
  3. 3.
    Y. Yamamoto. H. A. Hans. Prepration. Measurement and information capacity of optical quantum sttes. Rec. Mod. Phys. 58: 1001 (1986).CrossRefGoogle Scholar
  4. 4.
    S. Stenholm. Amplification of squeezed states. Opt. Comm. 58: 177 (1986).CrossRefGoogle Scholar
  5. 5.
    D. Kouzntesov. R. Ortega. Cummings Tavis Model as a nonlinear quautum amplifier. Quantum Scmiclass. Opt. 7: 1 (1995).CrossRefGoogle Scholar
  6. 6.
    D. Korzntesov. R. Ortega. D. Rohrlich. Quantum noise limits for nonlinear. Phase-invariant amplifiers. Phys. Rec. A. in press. (1995).Google Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Dmitri Kouznetsov
    • 1
  • Daniel Rohrlich
    • 2
  1. 1.Centro de InstrumentosUniversidad Nacional Autónoma de MéxicoD. F. Mexico
  2. 2.School of Physics and AstronomyTel Aviv UniversityTel AvivIsrael

Personalised recommendations