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Conference Paper: Rapid incoherent control of a simple quantum system via two-step optimization

TitleRapid incoherent control of a simple quantum system via two-step optimization
Authors
KeywordsIncoherent control
Qubit system
Two-step optimization
Rapid purification
Issue Date2008
PublisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1001331
Citation
The 27th Chinese Control Conference (CCC 2008), Kunming, Yunnan, China, 16-18 July 2008. In Chinese Control Conference, 2008, p. 511-515 How to Cite?
AbstractA rapid incoherent control scheme for driving a simple qubit system from an initial mixed state to an arbitrary target pure state is proposed. Lhis scheme consists of two main steps: rapid purification of the initial mixed state and time optimal transition from the conditional state to the target state. Lhe first step rapidly purifies the initial mixed state into an almost-pure state of the simple qubit system through continuous measurements and feedback control by the protocol proposed in Jacobs 2003 Physical Review A 67 030301(R). The second step finds a set of suitable time optimal controls to drive the simple qubit system from the conditional state to the target state. Lhe switching time between the first step and the second step is determined by the expected purity and the resultant state is an almost-pure state with a high fidelity with the target state. Lhis rapid incoherent control scheme provides an alternative quantum engineering strategy for the rapid preparation of arbitrary pure states of a simple qubit system.
Persistent Identifierhttp://hdl.handle.net/10722/62263
ISBN
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorDong, Den_HK
dc.contributor.authorLam, Jen_HK
dc.date.accessioned2010-07-13T03:57:27Z-
dc.date.available2010-07-13T03:57:27Z-
dc.date.issued2008en_HK
dc.identifier.citationThe 27th Chinese Control Conference (CCC 2008), Kunming, Yunnan, China, 16-18 July 2008. In Chinese Control Conference, 2008, p. 511-515en_HK
dc.identifier.isbn978-790071970-6-
dc.identifier.issn1934-1768-
dc.identifier.urihttp://hdl.handle.net/10722/62263-
dc.description.abstractA rapid incoherent control scheme for driving a simple qubit system from an initial mixed state to an arbitrary target pure state is proposed. Lhis scheme consists of two main steps: rapid purification of the initial mixed state and time optimal transition from the conditional state to the target state. Lhe first step rapidly purifies the initial mixed state into an almost-pure state of the simple qubit system through continuous measurements and feedback control by the protocol proposed in Jacobs 2003 Physical Review A 67 030301(R). The second step finds a set of suitable time optimal controls to drive the simple qubit system from the conditional state to the target state. Lhe switching time between the first step and the second step is determined by the expected purity and the resultant state is an almost-pure state with a high fidelity with the target state. Lhis rapid incoherent control scheme provides an alternative quantum engineering strategy for the rapid preparation of arbitrary pure states of a simple qubit system.en_HK
dc.languageengen_HK
dc.publisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1001331-
dc.relation.ispartofChinese Control Conferenceen_HK
dc.rightsChinese Control Conference. Copyright © Institute of Electrical and Electronics Engineers.-
dc.rights©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectIncoherent controlen_HK
dc.subjectQubit systemen_HK
dc.subjectTwo-step optimizationen_HK
dc.subjectRapid purificationen_HK
dc.titleRapid incoherent control of a simple quantum system via two-step optimizationen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailLam, J: jlam@hku.hken_HK
dc.identifier.authorityLam, J=rp00133en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/CHICC.2008.4605386en_HK
dc.identifier.scopuseid_2-s2.0-52649098483en_HK
dc.identifier.hkuros164331en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-52649098483&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage511en_HK
dc.identifier.epage515en_HK
dc.publisher.placeUnited States-
dc.identifier.scopusauthoridLam, J=7201973414en_HK
dc.identifier.scopusauthoridDong, D=8531030400en_HK
dc.customcontrol.immutablesml 140604-

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