Using a Shot Noise Junction to Characterize a Josepheson Travelling Wave Parametric Amplifier
Abstract
The Josepheson Travelling Wave Parametric Amplifier (JTWPA) is a solution for a broad band amplifier with near quantum limited noise characteristics. Reported techniques using AC Stark shifts to characterize the noise of a JTWPA show excellent noise characteristics but are inherently narrow band. Using a shot noise tunnel junction (SNTJ) allows for broadband characterization of the noise temperature of the JTWPA. Techniques for optimizing the TWPA for different measurement uses will also be discussed.
The authors would like to acknowledge MIT Lincoln Laboratory for providing the JTWPA for this work.- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..MARF28011E