High-fidelity measurement and quantum feedback control in circuit QED

Sarovar, M., Goan, H. S., Spiller, T. P. and Milburn, G. J. (2005) High-fidelity measurement and quantum feedback control in circuit QED. Physical Review A, 72 6: 062327. doi:10.1103/PhysRevA.72.062327

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Author Sarovar, M.
Goan, H. S.
Spiller, T. P.
Milburn, G. J.
Title High-fidelity measurement and quantum feedback control in circuit QED
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2005-01-01
Year available 2005
Sub-type Article (original research)
DOI 10.1103/PhysRevA.72.062327
Open Access Status File (Publisher version)
Volume 72
Issue 6
Start page 062327
Total pages 10
Editor B. Crasemann
Place of publication College Pk
Publisher The American Physical Society
Language eng
Subject C1
240400 Optical Physics
780102 Physical sciences
Abstract Circuit 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 two schemes 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.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Single-electron Transistor
Coherent Control
Q-Index Code C1
Institutional Status UQ

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Created: Wed, 15 Aug 2007, 17:37:02 EST