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Article: Generating coherent states of entangled spins
Title | Generating coherent states of entangled spins | ||||
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Authors | |||||
Keywords | Atomic spin Coherent state Collective spin Decoherence High fidelity | ||||
Issue Date | 2011 | ||||
Publisher | American Physical Society. The Journal's web site is located at http://pra.aps.org | ||||
Citation | Physical Review A (Atomic, Molecular and Optical Physics), 2011, v. 84 n. 3, article no. 032337 How to Cite? | ||||
Abstract | A coherent state of many spins contains quantum entanglement, which increases with a decrease in the collective spin value. We present a scheme to engineer this class of pure state based on incoherent spin pumping with a few collective raising or lowering operators. In a pumping scenario aimed for maximum entanglement, the steady state of N-pumped spin qubits realizes the ideal resource for the 1→N2 quantum telecloning. We show how the scheme can be implemented in a realistic system of atomic spin qubits in an optical lattice. Error analysis shows that high-fidelity state engineering is possible for N∼O(100) spins in the presence of decoherence. The scheme can also prepare a resource state for the secret sharing protocol and for the construction of the large-scale Affleck-Kennedy-Lieb-Tasaki state. © 2011 American Physical Society. | ||||
Persistent Identifier | http://hdl.handle.net/10722/149039 | ||||
ISSN | 2014 Impact Factor: 2.808 | ||||
ISI Accession Number ID |
Funding Information: The authors thank X. D. Xu for helpful comments. The work was supported by the Research Grant Council of Hong Kong under Grant No. 706711P. | ||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yu, H | en_HK |
dc.contributor.author | Luo, Y | en_HK |
dc.contributor.author | Yao, W | en_HK |
dc.date.accessioned | 2012-06-20T08:18:51Z | - |
dc.date.available | 2012-06-20T08:18:51Z | - |
dc.date.issued | 2011 | en_HK |
dc.identifier.citation | Physical Review A (Atomic, Molecular and Optical Physics), 2011, v. 84 n. 3, article no. 032337 | - |
dc.identifier.issn | 1050-2947 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/149039 | - |
dc.description.abstract | A coherent state of many spins contains quantum entanglement, which increases with a decrease in the collective spin value. We present a scheme to engineer this class of pure state based on incoherent spin pumping with a few collective raising or lowering operators. In a pumping scenario aimed for maximum entanglement, the steady state of N-pumped spin qubits realizes the ideal resource for the 1→N2 quantum telecloning. We show how the scheme can be implemented in a realistic system of atomic spin qubits in an optical lattice. Error analysis shows that high-fidelity state engineering is possible for N∼O(100) spins in the presence of decoherence. The scheme can also prepare a resource state for the secret sharing protocol and for the construction of the large-scale Affleck-Kennedy-Lieb-Tasaki state. © 2011 American Physical Society. | en_HK |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://pra.aps.org | en_HK |
dc.relation.ispartof | Physical Review A (Atomic, Molecular and Optical Physics) | - |
dc.rights | Copyright 2011 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevA.84.032337 | - |
dc.subject | Atomic spin | - |
dc.subject | Coherent state | - |
dc.subject | Collective spin | - |
dc.subject | Decoherence | - |
dc.subject | High fidelity | - |
dc.title | Generating coherent states of entangled spins | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Yao, W: wangyao@hku.hk | en_HK |
dc.identifier.authority | Yao, W=rp00827 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevA.84.032337 | en_HK |
dc.identifier.scopus | eid_2-s2.0-80053177123 | en_HK |
dc.identifier.hkuros | 199995 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-80053177123&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 84 | en_HK |
dc.identifier.issue | 3 | en_HK |
dc.identifier.spage | article no. 032337 | - |
dc.identifier.epage | article no. 032337 | - |
dc.identifier.isi | WOS:000295216700005 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Yu, H=53165293700 | en_HK |
dc.identifier.scopusauthorid | Luo, Y=36930622500 | en_HK |
dc.identifier.scopusauthorid | Yao, W=35141935300 | en_HK |
dc.identifier.issnl | 1050-2947 | - |