Observation of 4.2-K equilibrium-noise squeezing via a Josephson-parametric amplifier

B. Yurke; P. G. Kaminsky; R. E. Miller; E. A. Whittaker; A. D. Smith; A. H. Silver; R. W. Simon

doi:10.1103/PhysRevLett.60.764

Observation of 4.2-K equilibrium-noise squeezing via a Josephson-parametric amplifier

B. Yurke, P. G. Kaminsky, R. E. Miller, E. A. Whittaker, A. D. Smith, A. H. Silver, R. W. Simon

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219 Scopus citations

Abstract

We have demonstrated 42% squeezing of 4.2-K thermal noise using a Josephson-parametric amplifier operated at 19.4 GHz. The amplifier has been operated at 0.1 K with an excess noise of 0.28 K referred to the input port. This is less than the vacuum fluctuation noise h/2k=0.47 K at 19.4 GHz. The amplifier thus is less noise than a linear phase-insensitive amplifier such as a maser could in principle be.

Original language	English
Pages (from-to)	764-767
Number of pages	4
Journal	Physical Review Letters
Volume	60
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.60.764
State	Published - 1988

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10.1103/PhysRevLett.60.764

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abstract = "We have demonstrated 42% squeezing of 4.2-K thermal noise using a Josephson-parametric amplifier operated at 19.4 GHz. The amplifier has been operated at 0.1 K with an excess noise of 0.28 K referred to the input port. This is less than the vacuum fluctuation noise h/2k=0.47 K at 19.4 GHz. The amplifier thus is less noise than a linear phase-insensitive amplifier such as a maser could in principle be.",

author = "B. Yurke and Kaminsky, {P. G.} and Miller, {R. E.} and Whittaker, {E. A.} and Smith, {A. D.} and Silver, {A. H.} and Simon, {R. W.}",

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AU - Yurke, B.

AU - Kaminsky, P. G.

AU - Miller, R. E.

AU - Whittaker, E. A.

AU - Smith, A. D.

AU - Silver, A. H.

AU - Simon, R. W.

PY - 1988

Y1 - 1988

N2 - We have demonstrated 42% squeezing of 4.2-K thermal noise using a Josephson-parametric amplifier operated at 19.4 GHz. The amplifier has been operated at 0.1 K with an excess noise of 0.28 K referred to the input port. This is less than the vacuum fluctuation noise h/2k=0.47 K at 19.4 GHz. The amplifier thus is less noise than a linear phase-insensitive amplifier such as a maser could in principle be.

AB - We have demonstrated 42% squeezing of 4.2-K thermal noise using a Josephson-parametric amplifier operated at 19.4 GHz. The amplifier has been operated at 0.1 K with an excess noise of 0.28 K referred to the input port. This is less than the vacuum fluctuation noise h/2k=0.47 K at 19.4 GHz. The amplifier thus is less noise than a linear phase-insensitive amplifier such as a maser could in principle be.

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JO - Physical Review Letters

JF - Physical Review Letters

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Observation of 4.2-K equilibrium-noise squeezing via a Josephson-parametric amplifier

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