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Ideal quantum nondemolition measurement of a flux qubit at variable bias

Wang, Ying-Dan and Zhu, Xiaobo and Bruder, Christoph. (2011) Ideal quantum nondemolition measurement of a flux qubit at variable bias. Physical Review B, Vol. 83, H. 13 , 134504.

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Official URL: http://edoc.unibas.ch/dok/A6001660

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Abstract

We propose a scheme to realize a quantum nondemolition (QND) measurement of a superconducting flux qubit by a Josephson bifurcation amplifier. Our scheme can implement a perfect QND measurement for a qubit subject to a variable magnetic bias. Measurement back-action-induced qubit relaxation can be suppressed and hence the QND fidelity is expected to be high over a wide range of bias conditions.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Bruder)
UniBasel Contributors:Bruder, Christoph and Wang, Yingdan
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0163-1829
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:11 Oct 2012 15:31
Deposited On:11 Oct 2012 15:21

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