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Article: Nonlocal noise cross correlation mediated by entangled Majorana fermions
Title | Nonlocal noise cross correlation mediated by entangled Majorana fermions |
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Authors | |
Issue Date | 2012 |
Publisher | American 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. 86 n. 7, article no. 075318 How to Cite? |
Abstract | Due to their nonlocality, qubits nested in Majorana bound states may be the key to realize decoherence-free quantum computation. Majorana bound states could be achieved at the ends of a one-dimensional topological superconductor. However, when the bound states couple directly to electron reservoirs their nonlocal correlation is quenched by local Andreev reflections. Here we propose a scheme to generate nonlocal noise cross correlation between two well-separated quantum dots, mediated by a pair of Majorana bound states. Both positive and negative cross correlations can be obtained by tuning the gate voltages applied to the dots. Within a limited range of finite temperatures, the cross correlation is not suppressed by thermal fluctuations. Furthermore, we show how the local Andreev reflections suppress the noise cross correlation when multiple dot energy levels are coupled to the Majorana bound states. The measurable cross correlation is expected to serve as a sensitive indicator for the generation of Majorana fermions. © 2012 American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/175216 |
ISSN | 2014 Impact Factor: 3.736 |
ISI Accession Number ID | |
References | |
Errata |
DC Field | Value | Language |
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dc.contributor.author | Lü, HF | en_US |
dc.contributor.author | Lu, HZ | en_US |
dc.contributor.author | Shen, SQ | en_US |
dc.date.accessioned | 2012-11-26T08:54:33Z | - |
dc.date.available | 2012-11-26T08:54:33Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Physical Review B (Condensed Matter and Materials Physics), 2012, v. 86 n. 7, article no. 075318 | - |
dc.identifier.issn | 1098-0121 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/175216 | - |
dc.description.abstract | Due to their nonlocality, qubits nested in Majorana bound states may be the key to realize decoherence-free quantum computation. Majorana bound states could be achieved at the ends of a one-dimensional topological superconductor. However, when the bound states couple directly to electron reservoirs their nonlocal correlation is quenched by local Andreev reflections. Here we propose a scheme to generate nonlocal noise cross correlation between two well-separated quantum dots, mediated by a pair of Majorana bound states. Both positive and negative cross correlations can be obtained by tuning the gate voltages applied to the dots. Within a limited range of finite temperatures, the cross correlation is not suppressed by thermal fluctuations. Furthermore, we show how the local Andreev reflections suppress the noise cross correlation when multiple dot energy levels are coupled to the Majorana bound states. The measurable cross correlation is expected to serve as a sensitive indicator for the generation of Majorana fermions. © 2012 American Physical Society. | en_US |
dc.language | eng | en_US |
dc.publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ | en_US |
dc.relation.ispartof | Physical Review B (Condensed Matter and Materials Physics) | - |
dc.rights | Copyright 2012 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.86.075318 | - |
dc.title | Nonlocal noise cross correlation mediated by entangled Majorana fermions | en_US |
dc.type | Article | en_US |
dc.identifier.email | Lu, HZ: luhz@hku.hk | en_US |
dc.identifier.authority | Lu, HZ=rp01599 | en_US |
dc.description.nature | published_or_final_version | en_US |
dc.identifier.doi | 10.1103/PhysRevB.86.075318 | en_US |
dc.identifier.scopus | eid_2-s2.0-84865614938 | en_US |
dc.identifier.hkuros | 212539 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-84865614938&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 86 | en_US |
dc.identifier.issue | 7 | en_US |
dc.identifier.spage | article no. 075318 | - |
dc.identifier.epage | article no. 075318 | - |
dc.identifier.isi | WOS:000308004400006 | - |
dc.publisher.place | United States | en_US |
dc.relation.erratum | doi:10.1103/PhysRevB.88.159908 | - |
dc.identifier.scopusauthorid | Lü, HF=55349326600 | en_US |
dc.identifier.scopusauthorid | Lu, HZ=24376662200 | en_US |
dc.identifier.scopusauthorid | Shen, SQ=55348739100 | en_US |
dc.identifier.issnl | 1098-0121 | - |