Date: Monday, October 5

Presenter: Dr. Lin Tian
Host: Dr. Hailin Wang

Mesoscopic quantum systems: from quantum engineering to
quantum many-body physics

Enabled by the state-of-art micro-fabrication technology, novel quantum
features have been demonstrated in mesoscopic devices in recent experiments.
These devices, with the diversity in circuit design and the flexibility in
parameter control, are promising candidates to process and store quantum
information. In this talk, I will present our recent work on the quantum
engineering of two kinds of devices: the superconducting microwave resonator
and the nanomechanical resonator. Both systems are highly coherent macroscopic
quantum oscillator modes that can be strongly coupled to superconducting
qubits. I will discuss the ground state cooling and quantum information protocols
in the nanomechanical systems. I will also discuss novel quantum many-body
effects in the superconducting quantum devices which can result in new venues in
quantum engineering.