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Observation of parametric amplification and deamplification in a Josephson parametric amplifier
Abstract
We present the results of an experimental effort to generate squeezed microwave radiation using the phase-sensitive gain of a Josephson parametric amplifier. To facilitate the interpretation of the experimental results, we first present a discussion of the theory of microwave squeezing via Josephson parametric amplifiers. This is followed by a detailed description of the device fabricated for our experiment. Experimental results are then presented for the device used in both the doubly degenerate or four-photon mode and for the degenerate or three-photon mode. We have observed parametric deamplification of signals by more than 8 dB. We have demonstrated squeezing of 4.2-K thermal noise. When operated at 0.1 K, the amplifier exhibits an excess noise of 0.28 K when referred to the input. This is smaller than the vacuum fluctuation noise level \ensuremath{\Elzxh}\ensuremath{\omega}/2k=0.47 K. The amplifier is thus quieter than a linear phase-insensitive amplifier in principle can be.
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Citations
Cites
Quantum-mechanical noise in an interferometer
Caves, C. M. (1981) · Physical Review D · doi:10.1103/physrevd.23.1693 · Cited by 3,202
Cited by
Microwave photonics with superconducting quantum circuits
Gu, X., Kockum, A. F., Miranowicz, A., Liu, Y.-X., & Nori, F. (2017) · Physics Reports · doi:10.1016/j.physrep.2017.10.002 · Cited by 1,307
Dynamical Casimir effect in a Josephson metamaterial
Lähteenmäki, P., Paraoanu, G. S., Hassel, J., & Hakonen, P. J. (2013) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1212705110 · Cited by 351
Metadata
- Authors
- Yurke, B., Corruccini, L. R., Kaminsky, P. G., Rupp, L. W., Smith, A. D., Silver, A. H., Simon, R. W., & Whittaker, E. A.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 1989-03-01
- Volume
- 39
- Issue
- 5
- Pages
- 2519-2533
- ISSN
- 0556-2791 (ISSN-L)
- OpenAlex
- W2006516101
- Cited by
- 296
- References
- 1
- FWCI
- 4.11
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Observation of parametric amplification and deamplification in a Josephson parametric amplifier. https://app.cochat.ai/papers/10.1103/physreva.39.2519
- The paper
- Yurke, B., Corruccini, L. R., Kaminsky, P. G., Rupp, L. W., Smith, A. D., Silver, A. H., Simon, R. W., & Whittaker, E. A. (1989). Observation of parametric amplification and deamplification in a Josephson parametric amplifier. Physical Review A. https://doi.org/10.1103/physreva.39.2519
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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