Condensed Matter Seminar: "Ohm’s Law and Beyond for Atom Circuits"
(sign-up)Chris Lobb, University of Maryland
Physics - Condensed Matter
Atomtronics is an emerging interdisciplinary field that is creating new devices and circuits where ultracold atoms, often in the superfluid state, have a role analogous to that of electrons in electronics. After giving a brief overview of some experimental neutral atom-circuit results, I will show how these results can be described by lumped-element models analogous to those used in electronics. Resistance, capacitance and inductance can be defined for neutral-atom circuits, and they are analogous to the Sharvin resistance (in the non-superfluid case), quantum capacitance, and kinetic inductance, respectively, in electronic circuits. In the superfluid case, quantum coherence leads to behavior analogous to superconducting quantum interference devices (SQUIDs) and vortex-induced resistance.
In collaboration with R. B. Blakestad, G. K. Campbell, C. W. Clark, S. Eckel, M. Edwards, K. Helmerson, W. T. Hill, III, F. Jendrzejewski, J. G. Lee, B. J. McIlvain, S. R. Muniz, N. Murray, W. D. Phillips, A. Ramanathan, K. C. Wright, and M. Zelan
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