Exploring the physics of quantum measurement with superconducting circuits

Abstract:

When a quantum system is measured, it collapses onto a state that corresponds to the measurement outcome. This measurement backaction takes subtle forms if the system first interacts with an ancillary quantum system, which is then measured. Observing these phenomena requires detectors, which are able to extract most of the information leaking out of a quantum system. Superconducting circuits offer a testbed for these questions.
In this talk, I will show how various forms of quantum measurement backaction can be observed in circuit quantum electrodynamics (c-QED) experiments.

Remark: Unfortunately, there was a problem with the audio during recording, so that the audio is bad. But, with the highest volume of the loud speaker something can be heard, although with some noise.