Observation of two-mode squeezing in the microwave frequency domain

C. Eichler, D. Bozyigit, C. Lang, M. Baur, L. Steffen, J.M. Fink, S. Filipp, A. Wallraff, Physical Review Letters 107 (2011).

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Journal Article | Published
Author
Eichler, Christopher; Bozyigit, Deniz; Lang, C; Baur, Matthias P; Steffen, L. Kraig; Fink, Johannes MIST Austria ; Filipp, Stefan; Wallraff, Andreas
Abstract
Continuous variable entanglement between two modes of a radiation field is usually studied at optical frequencies. Here we demonstrate experiments that show the entanglement between microwave photons of different energy in a broadband squeezed beam. We use a Josephson parametric amplifier to generate the two-mode correlated state and detect all four quadrature components simultaneously in a two-channel heterodyne setup using amplitude detectors. Analyzing two-dimensional phase space histograms for all possible pairs of quadratures allows us to determine the full covariance matrix, which is in good agreement with the one expected for a two-mode squeezed state.
Publishing Year
Date Published
2011-09-06
Journal Title
Physical Review Letters
Acknowledgement
This work was supported by the European Research Council (ERC) through a Starting grant and by ETHZ. S. F. acknowledges the Austrian Science Foundation (FWF) for support
Volume
107
Issue
11
IST-REx-ID

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Eichler C, Bozyigit D, Lang C, et al. Observation of two-mode squeezing in the microwave frequency domain. Physical Review Letters. 2011;107(11). doi:10.1103/PhysRevLett.107.113601
Eichler, C., Bozyigit, D., Lang, C., Baur, M., Steffen, L., Fink, J. M., … Wallraff, A. (2011). Observation of two-mode squeezing in the microwave frequency domain. Physical Review Letters, 107(11). https://doi.org/10.1103/PhysRevLett.107.113601
Eichler, Christopher, Deniz Bozyigit, C Lang, Matthias Baur, L. Steffen, Johannes M Fink, Stefan Filipp, and Andreas Wallraff. “Observation of Two-Mode Squeezing in the Microwave Frequency Domain.” Physical Review Letters 107, no. 11 (2011). https://doi.org/10.1103/PhysRevLett.107.113601.
C. Eichler et al., “Observation of two-mode squeezing in the microwave frequency domain,” Physical Review Letters, vol. 107, no. 11, 2011.
Eichler C, Bozyigit D, Lang C, Baur M, Steffen L, Fink JM, Filipp S, Wallraff A. 2011. Observation of two-mode squeezing in the microwave frequency domain. Physical Review Letters. 107(11).
Eichler, Christopher, et al. “Observation of Two-Mode Squeezing in the Microwave Frequency Domain.” Physical Review Letters, vol. 107, no. 11, American Physical Society, 2011, doi:10.1103/PhysRevLett.107.113601.

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