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Conference Paper: Generating coherent states of entangled spins
Title | Generating coherent states of entangled spins |
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Authors | |
Issue Date | 2012 |
Publisher | American Physical Society. |
Citation | The 2012 March Meeting of the American Physical Society (APS), Boston, MA., 27 February-2 March 2012. How to Cite? |
Abstract | A coherent state of many spins contains quantum entanglement, which increases with the decrease of the collective spin value. We present a scheme to engineer this class of pure state based on incoherent spin pumping with several collective raising and lowering operators. In a pumping scenario aimed for maximum entanglement, the N-qubit steady state realizes the ideal resource for the 1->N/2 quantum telecloning. We show how the scheme can be implemented in the cold atomic system 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 the large-scale Affleck-Kennedy-Lieb-Tasaki state. |
Description | Abstract no. W1.008 |
Persistent Identifier | http://hdl.handle.net/10722/165691 |
DC Field | Value | Language |
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dc.contributor.author | Yu, H | en_US |
dc.contributor.author | Luo, Y | en_US |
dc.contributor.author | Yao, W | en_US |
dc.date.accessioned | 2012-09-20T08:22:13Z | - |
dc.date.available | 2012-09-20T08:22:13Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | The 2012 March Meeting of the American Physical Society (APS), Boston, MA., 27 February-2 March 2012. | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/165691 | - |
dc.description | Abstract no. W1.008 | - |
dc.description.abstract | A coherent state of many spins contains quantum entanglement, which increases with the decrease of the collective spin value. We present a scheme to engineer this class of pure state based on incoherent spin pumping with several collective raising and lowering operators. In a pumping scenario aimed for maximum entanglement, the N-qubit steady state realizes the ideal resource for the 1->N/2 quantum telecloning. We show how the scheme can be implemented in the cold atomic system 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 the large-scale Affleck-Kennedy-Lieb-Tasaki state. | - |
dc.language | eng | en_US |
dc.publisher | American Physical Society. | - |
dc.relation.ispartof | APS March Meeting 2012 | en_US |
dc.title | Generating coherent states of entangled spins | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Yu, H: yuhongyi@hku.hk | en_US |
dc.identifier.email | Yao, W: wangyao@hku.hk | en_US |
dc.identifier.authority | Yao, W=rp00827 | en_US |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.hkuros | 207156 | en_US |
dc.publisher.place | United States | - |
dc.description.other | The 2012 March Meeting of the American Physical Society (APS), Boston, MA., 27 February-2 March 2012. | - |