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

Date: 
Monday, October 5, 2009 -
4:00pm to 5:00pm
Speaker: 
Lin Tian
Speaker's Institution: 
UC Merced

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.