| Issue |
EPJ Web Conf.
Volume 198, 2019
Quantum Technology International Conference 2018 (QTech 2018)
|
|
|---|---|---|
| Article Number | 00008 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/epjconf/201919800008 | |
| Published online | 15 January 2019 | |
https://doi.org/10.1051/epjconf/201919800008
Development and characterization of a flux-pumped lumped element Josephson parametric amplifier
Clarendon Laboratory, Department of Physics, University of Oxford, OX1 3PU, United Kingdom
* e-mail: martina.esposito@physics.ox.ac.uk
Published online: 15 January 2019
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 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.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.