A near–quantum-limited Josephson traveling-wave parametric amplifier
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 16, 2015
- Source ID
- 10.1126/science.aaa8525
Entities
People
- C. Macklin
- D. Hover
- I. Siddiqi
- K. O’brien
- M. E. Schwartz
- Vladimir Bolkhovsky
- W. D. Oliver
- Xiaoxuan Zhang
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- Intelligence Advanced Research Projects Activity
- King Abdulaziz University
- Lawrence Berkeley National Laboratory
- Massachusetts Institute of Technology
- Office of the Director of National Intelligence