Peter Leek: Publications

Modelling Enclosures for Large-Scale Superconducting Quantum Circuits

(2019)

Authors:

PA Spring, T Tsunoda, B Vlastakis, PJ Leek

Critical slowing down in the bistable regime of circuit quantum electrodynamics

(2019)

Authors:

P Brookes, G Tancredi, AD Patterson, J Rahamim, M Esposito, PJ Leek, E Ginossar, MH Szymanska

Calibration of the cross-resonance two-qubit gate between directly-coupled transmons

(2019)

Authors:

AD Patterson, J Rahamim, T Tsunoda, P Spring, S Jebari, K Ratter, M Mergenthaler, G Tancredi, B Vlastakis, M Esposito, PJ Leek

Realization of a Carbon-Nanotube-Based Superconducting Qubit

(2019)

Authors:

Matthias Mergenthaler, Ani Nersisyan, Andrew Patterson, Martina Esposito, Andreas Baumgartner, Christian Schönenberger, G Andrew D Briggs, Edward A Laird, Peter J Leek

Development and characterization of a flux-pumped lumped element Josephson parametric amplifier

EPJ Web of Conferences EDP Sciences 198 (2019)

Authors:

Martina Esposito, Joseph Rahamim, Andrew Patterson, Matthias Mergenthaler, James Wills, Giulio Campanaro, Takahiro Tsunoda, Peter Spring, Sophia Sosnina, Salha Jebari, Kitti Ratter, Giovanna Tancredi, Brian Vlastakis, Peter Leek

Abstract:

Josephson parametric amplification is a tool of paramount importance in circuit-QED especially for the quantum-noise-limited single-shot readout 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 P1dB = −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.

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Peter Leek

Sub department

Modelling Enclosures for Large-Scale Superconducting Quantum Circuits

Authors:

Critical slowing down in the bistable regime of circuit quantum electrodynamics

Authors:

Calibration of the cross-resonance two-qubit gate between directly-coupled transmons

Authors:

Realization of a Carbon-Nanotube-Based Superconducting Qubit

Authors:

Development and characterization of a flux-pumped lumped element Josephson parametric amplifier

Authors:

Abstract:

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Peter Leek

Sub department

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Modelling Enclosures for Large-Scale Superconducting Quantum Circuits

Authors:

Critical slowing down in the bistable regime of circuit quantum electrodynamics

Authors:

Calibration of the cross-resonance two-qubit gate between directly-coupled transmons

Authors:

Realization of a Carbon-Nanotube-Based Superconducting Qubit

Authors:

Development and characterization of a flux-pumped lumped element Josephson parametric amplifier

Authors:

Abstract:

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