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Development and characterization of a flux-pumped lumped element Josephson parametric amplifier
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Development and characterization of a flux-pumped lumped element Josephson parametric amplifier
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Development and characterization of a flux-pumped lumped element Josephson parametric amplifier
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Journal Article
Development and characterization of a flux-pumped lumped element Josephson parametric amplifier
2019
Overview
Josephson parametric amplification is a tool of paramount importance in circuit-QED especially for the quantum-noise-limited single-shot read-out of superconducting qubits. We developed a Josephson parametric amplifier (JPA) based on a lumped-element LC resonator, in which the inductance L is composed by a geometric inductance and an array of 4 superconducting quantum interference devices (SQUIDs). We characterized the main figures of merit of the device, obtaining a −3 dB bandwidth BW = 15 MHz for a gain G = 21 dB and a 1 dB compression point P 1dB = −115 dBm. The obtained results are promising for the future use of such JPA as the first stage of amplification for single-shot readout of superconducting qubits.
Publisher
EDP Sciences
