The Generation and Detection of Squeezed Microwave Photons Realized using Traveling-Wave Parametric Amplifiers

Squeezing the electromagnetic vacuum is an essential metrological technique used to reduce quantum noise in applications spanning gravitational wave detection, biological microscopy, and quantum information science. In circuit quantum electrodynamics, Josephson parametric amplifiers play a crucial role in quantum-limited amplification and squeezed microwave generation. In this thesis, we develop a dual-pump, broadband Josephson traveling-wave parametric amplifier (JTWPA) to demonstrate non-degenerate four-wave mixing using a dual-dispersion-engineered JTWPA and investigate its squeezing performance. Furthermore, the thesis extends the existing JTWPA design to a lower frequency spectrum in the hundreds of MHz regime and demonstrates broadband parametric amplification with a large gain. Capable of multiplexed readout and improved signal-to-noise ratio, the new JTWPA can be utilized in a wide range of applications in condensed matter and astrophysics.

Name thesis:degree_name

Doctoral

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2023

Author dc:creator

• Qiu, Jack Yanjie

Advisors dc:contributor.advisor

• Oliver, William D.
• O’Brien, Kevin P.

Statement dc:rights

• In Copyright - Educational Use Permitted
• Copyright MIT

Licence dc:rights.uri

• http://rightsstatements.org/page/InC-EDU/1.0/

Handle dc:identifier.uri

https://hdl.handle.net/1721.1/150037

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/150037