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Squeezing Thermal Microwave Radiation

  • B. Yurke
  • P. G. Kaminsky
  • E. A. Whittaker
  • A. D. Smith
  • A. H. Silver
  • R. W. Simon
Part of the NATO ASI Series book series (NSSB, volume 190)

Abstract

We have demonstrated squeezing of 4.2 K thermal noise using a Josephson-parametric amplifier operated at 19.4 GHz. A 42% reduction in the equilibrium noise was observed. When operated at 0.1K, the amplifier exhibited an excess noise of 0.28 K referred to the amplifier’s input. This excess noise is less than the vacuum fluctuation noise at the input. The device can be operated in a nonchaotic mode with a signal gain of 9 dB.

Keywords

Pump Power Josephson Junction Reflection Loss Excess Noise Parametric Gain 
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.

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Copyright information

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • B. Yurke
    • 1
  • P. G. Kaminsky
    • 1
  • E. A. Whittaker
    • 2
  • A. D. Smith
    • 3
  • A. H. Silver
    • 3
  • R. W. Simon
    • 3
  1. 1.AT&T Bell LaboratoriesMurray HillUSA
  2. 2.Stevens Institute of TechnologyHobokenUSA
  3. 3.TRW Space & Technology GroupRedondo BeachUSA

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