A widely tunable parametric amplifier based on a SQUID array resonator
M. A. Castellanos-Beltran, K. W. Lehnert
TL;DR
This paper presents a highly tunable Josephson parametric amplifier using a SQUID array resonator, capable of adjusting its frequency and gain, with low added noise, suitable for quantum information applications.
Contribution
It introduces a novel tunable amplifier design based on a SQUID array resonator with wide frequency range and high gain, advancing quantum measurement technology.
Findings
Achieved tunable resonance frequency between 4 and 7.8 GHz.
Demonstrated gains up to 28 dB.
Estimated added noise less than twice the vacuum noise.
Abstract
We create a Josephson parametric amplifier from a transmission line resonator whose inner conductor is made from a series SQUID array. By changing the magnetic flux through the SQUID loops, we are able to adjust the circuit's resonance frequency and, consenquently, the center of the amplified band, between 4 and 7.8 GHz. We observe that the amplifier has gains as large as 28 dB and infer that it adds less than twice the input vacuum noise.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.