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Article: Emulating topological currents arising from a dipolar parity anomaly in two-dimensional optical lattices

TitleEmulating topological currents arising from a dipolar parity anomaly in two-dimensional optical lattices
Authors
Issue Date2019
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/pra/
Citation
Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2019, v. 99 n. 4, article no. 043419 , p. 1-10 How to Cite?
AbstractDipolar parity anomaly can be induced by spatiotemporally weak-dependent energy-momentum separation of paired Dirac points in two-dimensional Dirac semimetals. Here we reveal topological currents arising from this kind of anomaly. A corresponding lattice model is proposed to emulate the topological currents by using two-component ultracold atoms in a two-dimensional optical Raman lattice. In our scheme, the topological currents can be generated by varying on-site coupling between the two atomic components in time and tuned via the laser fields. Moreover, we show that the topological particle currents can directly be detected from measuring the drift of the center of mass of the atomic gases.
Persistent Identifierhttp://hdl.handle.net/10722/270100
ISSN
2019 Impact Factor: 2.777
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLin, Z-
dc.contributor.authorHuang, X-
dc.contributor.authorZhang, DW-
dc.contributor.authorZhu, SL-
dc.contributor.authorWang, Z-
dc.date.accessioned2019-05-20T05:09:34Z-
dc.date.available2019-05-20T05:09:34Z-
dc.date.issued2019-
dc.identifier.citationPhysical Review A: covering atomic, molecular, and optical physics and quantum information, 2019, v. 99 n. 4, article no. 043419 , p. 1-10-
dc.identifier.issn2469-9926-
dc.identifier.urihttp://hdl.handle.net/10722/270100-
dc.description.abstractDipolar parity anomaly can be induced by spatiotemporally weak-dependent energy-momentum separation of paired Dirac points in two-dimensional Dirac semimetals. Here we reveal topological currents arising from this kind of anomaly. A corresponding lattice model is proposed to emulate the topological currents by using two-component ultracold atoms in a two-dimensional optical Raman lattice. In our scheme, the topological currents can be generated by varying on-site coupling between the two atomic components in time and tuned via the laser fields. Moreover, we show that the topological particle currents can directly be detected from measuring the drift of the center of mass of the atomic gases.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/pra/-
dc.relation.ispartofPhysical Review A: covering atomic, molecular, and optical physics and quantum information-
dc.rightsCopyright 2019 by The American Physical Society. This article is available online at https://dx.doi.org/10.1103/PhysRevA.99.043419-
dc.titleEmulating topological currents arising from a dipolar parity anomaly in two-dimensional optical lattices-
dc.typeArticle-
dc.identifier.emailWang, Z: zwang@hku.hk-
dc.identifier.authorityWang, Z=rp00802-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevA.99.043419-
dc.identifier.scopuseid_2-s2.0-85064861522-
dc.identifier.hkuros297769-
dc.identifier.volume99-
dc.identifier.issue4-
dc.identifier.spagearticle no. 043419, p. 1-
dc.identifier.epagearticle no. 043419, p. 10-
dc.identifier.isiWOS:000465147800011-
dc.publisher.placeUnited States-

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