Observation of zero-point noise squeezing via a Josephson-parametric amplifier
- 17 September 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (12) , 1419-1422
- https://doi.org/10.1103/physrevlett.65.1419
Abstract
We have demonstrated (47±8)% squeezing of vacuum-fluctuation noise using a Josephson-parametric amplifier operated at 19.16 GHz. The amplifier was operated at 30 mK and has a double-sideband noise temperature of 0.446 K. This is comparable to the vacuum noise floor hν/2k=0.460 K.Keywords
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