Introduction to parametric amplification of quantum signals with Josephson circuits

By Michel H. Devoret, Ananda Roy. 2016

165 citations recorded by the source corpus.

Abstract This short and opinionated review starts with the concept of quantum signals at microwave frequencies and focuses on the principle of linear parametric amplification. This process emerges from the dispersive nonlinearity of Josephson junctions driven with appropriate tones. We discuss two defining characteristics of the corresponding amplifying devices: i) the number of modes excited by the signal, idler and pump waves and ii) the number of independent ports through which these waves enter into the circuit.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/4a7bfdbb394f274b29bf02b382b6675e2e946363

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Optimizing the Nonlinearity and Dissipation of a SNAIL Parametric Amplifier for Dynamic Range (2018, background): “Conventional degenerate parametric-amplifier theory [2,22] takes into account only one additional harmonic (the idler) at ωi = ωp − ωs, although in practice all higher intermodulation products (IMDs) will be created.”
Circuit quantum electrodynamics (2020, methodology): “Parametric amplifiers with two or multiple physical modes are also frequently put to use (Roy and Devoret, 2016) and can be operated both in the phase-sensitive and phase-preserving modes, e.g. in degenerate or non-degenerate mode of operation, as for example demonstrated in Eichler et al. (2014).”