Observation of zero-point noise squeezing via a Josephson-parametric amplifier

Movshovich, R.; Yurke, Bernard; Kaminsky, P. G.; Smith, A. D.; Silver, A. H.; Simon, Robert R.; Schneider, M.V.

doi:10.1103/physrevlett.65.1419

Cited by 147 publications

(114 citation statements)

References 22 publications

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“…To detect the relatively weak photon emission from the cavity, we employ a Josephson parametric amplifier (JPA) [23,25,[41][42][43]. The cavity output is first passed through an isolator and a circulator before being amplified by the JPA.…”

Section: Amplification Chain and Calibration Of The Intracavity Photomentioning

confidence: 99%

Double Quantum Dot Floquet Gain Medium

et al. 2016

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Strongly driving a two-level quantum system with light leads to a ladder of Floquet states separated by the photon energy. Nanoscale quantum devices allow the interplay of confined electrons, phonons, and photons to be studied under strong driving conditions. Here, we show that a single electron in a periodically driven double quantum dot functions as a "Floquet gain medium," where population imbalances in the double quantum dot Floquet quasienergy levels lead to an intricate pattern of gain and loss features in the cavity response. We further measure a large intracavity photon number n c in the absence of a cavity drive field, due to equilibration in the Floquet picture. Our device operates in the absence of a dc current-one and the same electron is repeatedly driven to the excited state to generate population inversion. These results pave the way to future studies of nonclassical light and thermalization of driven quantum systems.

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Section: Amplification Chain and Calibration Of The Intracavity Photomentioning

confidence: 99%

Double Quantum Dot Floquet Gain Medium

et al. 2016

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“…This paper is stimulated by experiments with nonequilibrium pumped Josephson junction systems [2,3,4], where ZPFs play an important role at low temperatures. In [2] ZPFs were detected in a dc-current biased Josephson junction, measuring the low frequency noise of the voltage V (t) across the junction.…”

Section: Introductionmentioning

confidence: 99%

Quantum noise in a current-biased Josephson junction

Levinson

2003

Phys. Rev. B

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“…The later can occur at low temperatures such that hf 0 ≪ k B T , resulting in squeezed quantum states in the~Σ resonator. Parametric amplification and deamplification of microwave signals with superconductors has previously been realized with a Josephson junction as the nonlinear oscillator [4] and squeezing of quantum noise was demonstrated in an experiment where the temperature of the Josephson junction was kept below the zero-point energy of the Josephson plasma oscillation [8]. Yurke and Buks [9] have recently given a theory of parametric amplification in superconducting resonators.…”

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confidence: 99%

Nonlinearities and parametric amplification in superconducting coplanar waveguide resonators

Tholén

Ergül

Doherty

et al. 2007

Applied Physics Letters

109

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Experimental investigations of the nonlinear properties of superconducting niobium coplanar waveguide resonators are reported. The nonlinearity due to a current dependent kinetic inductance of the center conductor is strong enough to realize bifurcation of the nonlinear oscillator. When driven with two frequencies near the threshold for bifurcation, parametric amplification with a gain of +22.4 dB is observed.

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Observation of zero-point noise squeezing via a Josephson-parametric amplifier

Cited by 147 publications

References 22 publications

Double Quantum Dot Floquet Gain Medium

Double Quantum Dot Floquet Gain Medium

Quantum noise in a current-biased Josephson junction

Nonlinearities and parametric amplification in superconducting coplanar waveguide resonators

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