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Article: Rapid incoherent control of quantum systems based on continuous measurements and reference model

TitleRapid incoherent control of quantum systems based on continuous measurements and reference model
Authors
Issue Date2009
PublisherThe Institution of Engineering and Technology. The Journal's web site is located at http://www.ietdl.org/IP-CTA
Citation
Iet Control Theory And Applications, 2009, v. 3 n. 2, p. 161-169 How to Cite?
AbstractA rapid incoherent control scheme is proposed for driving a quantum system from an initial mixed state to a final state having a high fidelity with a target pure state. This scheme consists of two main steps: rapid purification of the initial mixed state and time-optimal control of the conditional state. The first step rapidly purifies the initial mixed state into an almost-pure state (conditional state) through continuous measurements and feedback control. The second step finds a set of suitable time-optimal controls through the control design of a reference model to drive the quantum system from the conditional state to the final state. The switching time between the two steps is determined by the expected purity or fidelity and the resultant state is an almost-pure state having a high fidelity with the target pure state. As an illustrative example, the authors apply the present rapid incoherent control scheme to a spin system. The potential applications of model predictive control to quantum systems are also discussed briefly. © The Institution of Engineering and Technology 2009.
Persistent Identifierhttp://hdl.handle.net/10722/59015
ISSN
2015 Impact Factor: 1.957
2015 SCImago Journal Rankings: 1.467
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China60703083
K. C. Wong Education Foundation (Hong Kong)
China Postdoctoral Science Foundation20060400515
U. S. Army Research OfficeW911NF-04-1-0386
Funding Information:

This work was supported in part by the National Natural Science Foundation of China under Grant No. 60703083, the K. C. Wong Education Foundation (Hong Kong) and the China Postdoctoral Science Foundation (20060400515). T.-J. Tarn acknowledges the partial support from the U. S. Army Research Office under Grant No. W911NF-04-1-0386.

References

 

DC FieldValueLanguage
dc.contributor.authorDong, Den_HK
dc.contributor.authorLam, Jen_HK
dc.contributor.authorTarn, TJen_HK
dc.date.accessioned2010-05-31T03:41:27Z-
dc.date.available2010-05-31T03:41:27Z-
dc.date.issued2009en_HK
dc.identifier.citationIet Control Theory And Applications, 2009, v. 3 n. 2, p. 161-169en_HK
dc.identifier.issn1751-8644en_HK
dc.identifier.urihttp://hdl.handle.net/10722/59015-
dc.description.abstractA rapid incoherent control scheme is proposed for driving a quantum system from an initial mixed state to a final state having a high fidelity with a target pure state. This scheme consists of two main steps: rapid purification of the initial mixed state and time-optimal control of the conditional state. The first step rapidly purifies the initial mixed state into an almost-pure state (conditional state) through continuous measurements and feedback control. The second step finds a set of suitable time-optimal controls through the control design of a reference model to drive the quantum system from the conditional state to the final state. The switching time between the two steps is determined by the expected purity or fidelity and the resultant state is an almost-pure state having a high fidelity with the target pure state. As an illustrative example, the authors apply the present rapid incoherent control scheme to a spin system. The potential applications of model predictive control to quantum systems are also discussed briefly. © The Institution of Engineering and Technology 2009.en_HK
dc.languageengen_HK
dc.publisherThe Institution of Engineering and Technology. The Journal's web site is located at http://www.ietdl.org/IP-CTAen_HK
dc.relation.ispartofIET Control Theory and Applicationsen_HK
dc.titleRapid incoherent control of quantum systems based on continuous measurements and reference modelen_HK
dc.typeArticleen_HK
dc.identifier.emailLam, J:james.lam@hku.hken_HK
dc.identifier.authorityLam, J=rp00133en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1049/iet-cta:20080047en_HK
dc.identifier.scopuseid_2-s2.0-60849124829en_HK
dc.identifier.hkuros164195en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-60849124829&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume3en_HK
dc.identifier.issue2en_HK
dc.identifier.spage161en_HK
dc.identifier.epage169en_HK
dc.identifier.isiWOS:000263904900001-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridDong, D=8531030400en_HK
dc.identifier.scopusauthoridLam, J=7201973414en_HK
dc.identifier.scopusauthoridTarn, TJ=7006002389en_HK

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