Superconducting Quantum Circuits: from Photons to Engines

Dr. Christopher Wilson (hosted by Kater Murch), Institute for Quantum Computing, Department of Electrical and Computer Engineering, University of Waterloo, Ontario, Canada
November 13, 2017 at 4:00 pm
241 Compton
Event Description 

In the last decade, superconducting quantum circuits (SQC) have become a well-established platform for both fundamental and applied research in quantum information science.  In the technological realm of quantum computation, this is evidenced by major investments from international corporations including Google, Intel and IBM, as well as major investments by governments across North America, Europe and Asia. SQC have also proven important in studying fundamental physics including topics such as relativity, the quantum vacuum and light-matter interaction. They have also proven a versatile platform for studying quantum thermodynamics and heat engines.  In this talk, we will present a number of experiments using SQC across these various fields. In the first, we study light-matter interaction and demonstrate a new regime of coupling, called the ultrastrong coupling regime, where the coupling between light and matter is no longer a perturbation to the system. In the second, we use a multimode parametric cavity to produce multimode entangled states of microwave photons. Such states are potential useful for a variety of quantum networking protocols such as quantum secret sharing. In the last experiment, we will present preliminary work on developing a mesoscopic heat engine. The goal is to implement a photonic piston, where a photon gas is the working fluid of our engine.

 

Coffee:  3:45 pm, 241 Compton