A near–quantum-limited Josephson traveling-wave parametric amplifier-Reference-Cited by-同舟云学术

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

Published:2015-10-16 Issue:6258 Volume:350 Page:307-310
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Macklin C.¹²,O’Brien K.³,Hover D.⁴,Schwartz M. E.¹,Bolkhovsky V.⁴,Zhang X.³⁵⁶,Oliver W. D.⁴⁷,Siddiqi I.¹

Affiliation:

1. Quantum Nanoelectronics Laboratory, University of California, Berkeley, Berkeley, CA 94720, USA.

2. Computational Research Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

3. Nanoscale Science and Engineering Center, University of California, Berkeley, Berkeley, CA 94720, USA.

4. Massachusetts Institute of Technology (MIT) Lincoln Laboratory, 244 Wood Street, Lexington, MA 02420, USA.

5. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

6. Department of Physics, King Abdulaziz University, Jeddah 21589, Saudi Arabia.

7. Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.

Abstract

Stringing together a powerful amplifier Amplifying microwave signals with high gain and across a broad range of frequencies is crucial in solid-state quantum information processing (QIP). Achieving broadband operation is especially tricky. Macklin et al. engineered an amplifier that contains a long chain of so-called Josephson junctions (see the Perspective by Cleland). The amplifier exhibited high gain over a gigahertz-sized bandwidth and was able to perform high-fidelity qubit readout. Because the amplifier will be capable of reading out as many as 20 qubits simultaneously, it may help to scale up QIP protocols. Science , this issue p. 307 ; see also p. 280

Funder

Air Force Office of Scientific Research

Army Research Office

Office of the Director of National Intelligence (ODNI)

Intelligence Advanced Research Projects Activity (IARPA)

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference33 articles.

1. Mapping the optimal route between two quantum states

2. Observation of Measurement-Induced Entanglement and Quantum Trajectories of Remote Superconducting Qubits