Our group studies nano-scale devices down to very low temperatures ~ 10 mK. We particularly look at
- Nanoelectromechanical Systems (NEMS)
NEMS are microscopic analogs of a guitar string. A large guitar string vibrates at audible frequencies whereas these systems resonate from radio frequency to microwaves. We probe phenomena like quantum friction in these systems.
A bucked NEMS device and Guitar string
- 2-D electron systems and metallic nanowires.
In these systems, we probe spin currents as opposed to charging transport. This is expected to shed light on e-e interactions and spin-orbit effects in various systems.
- Superconducting microwave circuits
We use these devices to study NEMS and other hybrid systems. We are also building single photon sensors for some experiments in quantum optics.