A near–quantum-limited Josephson traveling-wave parametric amplifier

By C. Macklin, Kevin J. O'Brien, D. Hover, M. Schwartz, V. Bolkhovsky, Xiang Zhang, Xiang Zhang, William D. Oliver, Irfan Siddiqi. Science, 2015

815 citations recorded by the source corpus.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/91335cadfd991d999491f355a2d1f47a14682bdf

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Citations in the corpus

Rapid High-fidelity Multiplexed Readout of Superconducting Qubits (2018, methodology): “The output signal emitted from the sample is amplified by a traveling wave parametric amplifier (TWPA), a broad-band near-quantum-limited non-degenerate amplifier with an average gain of 20 dB in the relevant bandwidth 6.5–7.8 GHz and a compression point of P1 dB = −100 dBm [26].”
Computation of Molecular Spectra on a Quantum Processor with an Error-Resilient Algorithm (2017, background): “A near-quantum-limited traveling wave parametric amplifier [33, 34] enables high-fidelity single-shot measurement of the joint qubit state (SI Experimental Details).”
Rapid High-Fidelity Single-Shot Dispersive Readout of Superconducting Qubits (2017, background): “With these advances, state discrimination is now predominantly limited by qubit decay during the time of measurement [22, 24, 25].”
Superconducting Parametric Amplifiers: The State of the Art in Josephson Parametric Amplifiers (2020, methodology): “In comparison to Josephson reflection paramps, JTWPAs seem to be slightly noisier, at roughly four times the SQL [33].”
Circuit quantum electrodynamics (2020, background): “This device does not have a fixed gain-bandwidth product and has been demonstrated to have 20 dB over as much as 3 GHz bandwidth while operating close to the quantum limit (Macklin et al., 2015; Planat et al., 2020; White et al., 2015).”
Microwave photonics with superconducting quantum circuits (2017, background): “Furthermore, directional amplification has also been demonstrated with travelling-wave amplifiers, implemented with a large number of Josephson junctions forming a nonlinear lumped-element transmission line [242, 243].”