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Article: Deterministic preparation of Dicke states of donor nuclear spins in silicon by cooperative pumping

TitleDeterministic preparation of Dicke states of donor nuclear spins in silicon by cooperative pumping
Authors
Issue Date2012
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2012, v. 85 n. 15 How to Cite?
AbstractFor donor nuclear spins in silicon, we show how to deterministically prepare various symmetric and asymmetric Dicke states which span a complete basis of the many-body Hilbert space. The state preparation is realized by cooperative pumping of nuclear spins by coupled donor electrons, and the required controls are in situ to the prototype Kane proposal for quantum computation. This scheme only requires a subgigahertz donor exchange coupling, which can be readily achieved without atomically precise donor placement, and hence it offers a practical way to prepare multipartite entanglement of spins in silicon with current technology. All desired Dicke states appear as the steady state under various pumping scenarios, and therefore the preparation is robust and does not require accurate temporal controls. Numerical simulations with realistic parameters show that Dicke states of 10-20 qubits can be prepared with high fidelity in the presence of decoherence and unwanted dynamics. © 2012 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/149041
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU706711P
HKU8/CRF/11G
Funding Information:

The work was supported by the Research Grant Council of Hong Kong under Grants No. HKU706711P and No. HKU8/CRF/11G. The authors acknowledge Andrea Morello and Wendi Li for helpful discussions.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorLuo, Yuen_HK
dc.contributor.authorYu, Hen_HK
dc.contributor.authorYao, Wen_HK
dc.date.accessioned2012-06-21T03:18:25Z-
dc.date.available2012-06-21T03:18:25Z-
dc.date.issued2012en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2012, v. 85 n. 15en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/149041-
dc.description.abstractFor donor nuclear spins in silicon, we show how to deterministically prepare various symmetric and asymmetric Dicke states which span a complete basis of the many-body Hilbert space. The state preparation is realized by cooperative pumping of nuclear spins by coupled donor electrons, and the required controls are in situ to the prototype Kane proposal for quantum computation. This scheme only requires a subgigahertz donor exchange coupling, which can be readily achieved without atomically precise donor placement, and hence it offers a practical way to prepare multipartite entanglement of spins in silicon with current technology. All desired Dicke states appear as the steady state under various pumping scenarios, and therefore the preparation is robust and does not require accurate temporal controls. Numerical simulations with realistic parameters show that Dicke states of 10-20 qubits can be prepared with high fidelity in the presence of decoherence and unwanted dynamics. © 2012 American Physical Society.en_HK
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_HK
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleDeterministic preparation of Dicke states of donor nuclear spins in silicon by cooperative pumpingen_HK
dc.typeArticleen_HK
dc.identifier.emailYao, W: wangyao@hku.hken_HK
dc.identifier.authorityYao, W=rp00827en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevB.85.155304en_HK
dc.identifier.scopuseid_2-s2.0-84860294682en_HK
dc.identifier.hkuros199946-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84860294682&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume85en_HK
dc.identifier.issue15en_HK
dc.identifier.eissn1550-235X-
dc.identifier.isiWOS:000302402600006-
dc.publisher.placeUnited Statesen_HK
dc.relation.projectQuantum Control and Quantum Information Processing-
dc.identifier.scopusauthoridLuo, Yu=36930622500en_HK
dc.identifier.scopusauthoridYu, H=53165293700en_HK
dc.identifier.scopusauthoridYao, W=35141935300en_HK

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