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Article: Quantum computing by optical control of electron spins

TitleQuantum computing by optical control of electron spins
Authors
Keywordsoptical control
quantum computing
quantum dot
spin
Issue Date2010
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/00018732.asp
Citation
Advances In Physics, 2010, v. 59 n. 5, p. 703-802 How to Cite?
AbstractWe review the progress and main challenges in implementing large-scale quantum computing by optical control of electron spins in quantum dots (QDs). Relevant systems include self-assembled QDs of III-V or II-VI compound semiconductors (such as InGaAs and CdSe), monolayer fluctuation QDs in compound semiconductor quantum wells, and impurity centres in solids, such as P-donors in silicon and nitrogen-vacancy centres in diamond. The decoherence of the electron spin qubits is discussed and various schemes for countering the decoherence problem are reviewed. We put forward designs of local nodes consisting of a few qubits which can be individually addressed and controlled. Remotely separated local nodes are connected by photonic structures (microcavities and waveguides) to form a large-scale distributed quantum system or a quantum network. The operation of the quantum network consists of optical control of a single electron spin, coupling of two spins in a local nodes, optically controlled quantum interfacing between stationary spin qubits in QDs and flying photon qubits in waveguides, rapid initialization of spin qubits and qubit-specific single-shot non-demolition quantum measurement. The rapid qubit initialization may be realized by selectively enhancing certain entropy dumping channels via phonon or photon baths. The single-shot quantum measurement may be in situ implemented through the integrated photonic network. The relevance of quantum non-demolition measurement to large-scale quantum computation is discussed. To illustrate the feasibility and demand, the resources are estimated for the benchmark problem of factorizing 15 with Shor's algorithm. © 2010 Taylor & Francis.
Persistent Identifierhttp://hdl.handle.net/10722/125269
ISSN
2015 Impact Factor: 18.0
2015 SCImago Journal Rankings: 12.284
ISI Accession Number ID
Funding AgencyGrant Number
US NSFPHY 0804114
US AROW911NF-08-1-0487
Hong Kong RGCCUHK/402207
HKU/706309P
Funding Information:

This review is based on work done in long collaborations with many people, including D.G. Steel, D. Gammon, P. Chen, C. Peirmarocchi, S.E. Economou, S.K. Saikin, C. Emary, W. Yang and under financial support from US NSF (PHY 0804114), US ARO (W911NF-08-1-0487), and Hong Kong RGC (CUHK/402207 and HKU/706309P).

References

 

DC FieldValueLanguage
dc.contributor.authorLiu, RBen_HK
dc.contributor.authorYao, Wen_HK
dc.contributor.authorSham, LJen_HK
dc.date.accessioned2010-10-31T11:21:09Z-
dc.date.available2010-10-31T11:21:09Z-
dc.date.issued2010en_HK
dc.identifier.citationAdvances In Physics, 2010, v. 59 n. 5, p. 703-802en_HK
dc.identifier.issn0001-8732en_HK
dc.identifier.urihttp://hdl.handle.net/10722/125269-
dc.description.abstractWe review the progress and main challenges in implementing large-scale quantum computing by optical control of electron spins in quantum dots (QDs). Relevant systems include self-assembled QDs of III-V or II-VI compound semiconductors (such as InGaAs and CdSe), monolayer fluctuation QDs in compound semiconductor quantum wells, and impurity centres in solids, such as P-donors in silicon and nitrogen-vacancy centres in diamond. The decoherence of the electron spin qubits is discussed and various schemes for countering the decoherence problem are reviewed. We put forward designs of local nodes consisting of a few qubits which can be individually addressed and controlled. Remotely separated local nodes are connected by photonic structures (microcavities and waveguides) to form a large-scale distributed quantum system or a quantum network. The operation of the quantum network consists of optical control of a single electron spin, coupling of two spins in a local nodes, optically controlled quantum interfacing between stationary spin qubits in QDs and flying photon qubits in waveguides, rapid initialization of spin qubits and qubit-specific single-shot non-demolition quantum measurement. The rapid qubit initialization may be realized by selectively enhancing certain entropy dumping channels via phonon or photon baths. The single-shot quantum measurement may be in situ implemented through the integrated photonic network. The relevance of quantum non-demolition measurement to large-scale quantum computation is discussed. To illustrate the feasibility and demand, the resources are estimated for the benchmark problem of factorizing 15 with Shor's algorithm. © 2010 Taylor & Francis.en_HK
dc.languageengen_HK
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/00018732.aspen_HK
dc.relation.ispartofAdvances in Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectoptical controlen_HK
dc.subjectquantum computingen_HK
dc.subjectquantum doten_HK
dc.subjectspinen_HK
dc.titleQuantum computing by optical control of electron spinsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0001-8732&volume=59&spage=703&epage=802&date=2010&atitle=Quantum+computing+by+optical+control+of+electron+spinsen_HK
dc.identifier.emailYao, W: wangyao@hku.hken_HK
dc.identifier.authorityYao, W=rp00827en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1080/00018732.2010.505452en_HK
dc.identifier.scopuseid_2-s2.0-77956575540en_HK
dc.identifier.hkuros180614en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77956575540&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume59en_HK
dc.identifier.issue5en_HK
dc.identifier.spage703en_HK
dc.identifier.epage802en_HK
dc.identifier.isiWOS:000281699600002-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLiu, RB=8927912500en_HK
dc.identifier.scopusauthoridYao, W=35141935300en_HK
dc.identifier.scopusauthoridSham, LJ=7006555193en_HK
dc.identifier.citeulike7933141-

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