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Conference Paper: Feedback control of nuclear spin bath for a single hole spin in a quantum dot

TitleFeedback control of nuclear spin bath for a single hole spin in a quantum dot
Authors
Issue Date2014
PublisherAmerican Physical Society. The Journal's web site is located at http://www.aps.org/memb/guide/prbook-baps.cfm
Citation
American Physical Society (APS) March Meeting, Denver, Colorado, USA, 3-7 March 2014. In American Physical Society Bulletin, 2014, v. 59 n. 1, p. abstract no. T36.00012 How to Cite?
AbstractIn a semiconductor quantum dot, the nuclear spin bath plays an important role as the ultimate environment of an electron or hole spin at low temperature. Through dynamic nuclear spin polarization driven by an oscillating electric field, we show that feedback controls can be implemented on the nuclear spin bath of a single hole spin. The feedback controls utilize the anisotropic hyperfine interaction between the hole spin and the nuclear spins. The negative feedback can suppress the statistical fluctuations of the nuclear hyperfine field and lead to longer coherence time of the hole spin. Positive feedback can possibly lead to cat like state of nuclear spin bath. The efficiency of the controls schemes is investigated under different parameters and control strategies. The work is supported by the Croucher Foundation under the Croucher Innovation Award, and the Research Grant Council of Hong Kong (HKU706309P, HKU8/CRF/11G).
DescriptionSession T36 GOI: Focus Session: Semiconductor Qubits: Magnetic Control & Nuclear Dynamic
Persistent Identifierhttp://hdl.handle.net/10722/201411
ISSN

 

DC FieldValueLanguage
dc.contributor.authorPang, HLen_US
dc.contributor.authorGong, Zen_US
dc.contributor.authorYao, Wen_US
dc.date.accessioned2014-08-21T07:26:39Z-
dc.date.available2014-08-21T07:26:39Z-
dc.date.issued2014en_US
dc.identifier.citationAmerican Physical Society (APS) March Meeting, Denver, Colorado, USA, 3-7 March 2014. In American Physical Society Bulletin, 2014, v. 59 n. 1, p. abstract no. T36.00012en_US
dc.identifier.issn0003-0503-
dc.identifier.urihttp://hdl.handle.net/10722/201411-
dc.descriptionSession T36 GOI: Focus Session: Semiconductor Qubits: Magnetic Control & Nuclear Dynamic-
dc.description.abstractIn a semiconductor quantum dot, the nuclear spin bath plays an important role as the ultimate environment of an electron or hole spin at low temperature. Through dynamic nuclear spin polarization driven by an oscillating electric field, we show that feedback controls can be implemented on the nuclear spin bath of a single hole spin. The feedback controls utilize the anisotropic hyperfine interaction between the hole spin and the nuclear spins. The negative feedback can suppress the statistical fluctuations of the nuclear hyperfine field and lead to longer coherence time of the hole spin. Positive feedback can possibly lead to cat like state of nuclear spin bath. The efficiency of the controls schemes is investigated under different parameters and control strategies. The work is supported by the Croucher Foundation under the Croucher Innovation Award, and the Research Grant Council of Hong Kong (HKU706309P, HKU8/CRF/11G).-
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://www.aps.org/memb/guide/prbook-baps.cfm-
dc.relation.ispartofAmerican Physical Society Bulletinen_US
dc.rightsAmerican Physical Society Bulletin. Copyright © American Physical Society.-
dc.titleFeedback control of nuclear spin bath for a single hole spin in a quantum doten_US
dc.typeConference_Paperen_US
dc.identifier.emailGong, Z: gongzr@hku.hken_US
dc.identifier.emailYao, W: wangyao@hku.hken_US
dc.identifier.authorityYao, W=rp00827en_US
dc.identifier.hkuros234276en_US
dc.identifier.volume59-
dc.identifier.issue1-
dc.publisher.placeUnited States-

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