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Cavity Quantum Electrodynamics in Mesoscopic Circuits

"Cavity Quantum Electrodynamics in Mesoscopic Circuits: High-fidelity Measurement and Quantum Feedback Control"SPEAKER: Prof. Hsi-Sheng Goan, National Taiwan UniversityABSTRACT:
Circuit Quantum Electrodynamics (QED) is a promising solid-state quantum computing architecture. It also has excellent potential as a platform for quantum control-especially quantum feedback control-experiments. However, the current scheme for measurement in circuit QED is low efficiency and has low signal-to-noise ratio for single-shot measurements. The low quality of this measurement makes the implementation of feedback difficult, and here we propose a scheme for measurement in circuit QED architectures that can significantly improve signal-to-noise ratio and potentially achieve quantum-limited measurement. Such measurements would enable the implementation of quantum feedback protocols and we illustrate this with a simple entanglement-stabilization scheme.Joint work with G. Milburn, M. Sarovar, and T.S. Spiller.BIO: Hsi-Sheng Goan is a Professor of Physics at National Taiwan University in Taipei, Taiwan, working on solid state implementations of quantum computing in collaboration with the Center for Quantum Computing in Australia.HOST: Prof. Todd Brun, tbrun@usc.edu

Location: Seaver Science Library (SSL) - 150

Audiences: Everyone Is Invited

Contact: Mayumi Thrasher