Colloquium
| Description: |
Roberto Ramos (Drexel University) From Classical Resonators to Novel Artificial Atoms Abstract: When two superconductors are interrupted by a weak link, the behavior of the resulting physical system can be described as a tunable classical resonator which can be excited by microwaves. When sufficiently cooled and isolated from the environment, this classical resonator behaves like an artificial atom with distinct quantum energy states. In this talk, I will discuss the results of our transport and microwave experiments carried out at temperatures between 4K and 0.010 K showing classical and quantum behavior in these systems. I will discuss results involving conventional Nb junctions, new data involving microwave resonant activation in magnesium diboride (MgB2) junctions and work involving graphene-based junctions. |
| Date: | Thursday, November 5, 2009 |
| Time: | 3:30pm-4:30pm |
| Duration: | 60 minutes |
| Priority: | Medium |
| Access: | Public |
| Created by: | Calendar Administrator |
| Updated: | Tuesday, November 3, 2009 11:34am |
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