Condensed Matter Physics Seminar

2 p.m., Thursday, May 1, 2003
Room 1201, Physics Building

 Prospects for Strong Cavity QED in Superconducting Electrical Circuits

Steven M. Girvin

(Yale University)

Abstract:  Recent remarkable experimental progress has led to the successful development of superconducting quantum bits and complete quantum control of these artificial ‘atoms’ has been demonstrated.  In this talk I will explore the possibility of inserting these qubits into a high Q superconducting resonator and achieving the strong coupling limit of cavity quantum electrodynamics.  Conservative and experimentally realistic estimates suggest that this should be possible and might permit dramatic enhancement of the lifetime  as well as permit entanglement of multiple qubits separated by centimeter distances.  A realistic proposal for quantum non-demolition readout of multi-qubit states will be described.  Rob Schoelkopf at Yale has an experimental program underway using co-planar waveguide resonators.  Keith Schwab’s group at Maryland is exploring similar ideas for nano-mechanical resonators.
Host:  Das Sarma
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