Gating Classical Information Flow via Equilibrium Quantum Phase Transitions
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http://hdl.handle.net/10045/86491
Título: | Gating Classical Information Flow via Equilibrium Quantum Phase Transitions |
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Autor/es: | Banchi, Leonardo | Fernández-Rossier, Joaquín | Hirjibehedin, Cyrus F. | Bose, Sougato |
Grupo/s de investigación o GITE: | Grupo de Nanofísica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | Hopping transport | Magnetic anisotropy | Quantum phase transitions | Quantum transport |
Área/s de conocimiento: | Física de la Materia Condensada |
Fecha de publicación: | 7-abr-2017 |
Editor: | American Physical Society |
Cita bibliográfica: | Physical Review Letters. 2017, 118: 147203. doi:10.1103/PhysRevLett.118.147203 |
Resumen: | The development of communication channels at the ultimate size limit of atomic scale physical dimensions will make the use of quantum entities an imperative. In this regime, quantum fluctuations naturally become prominent and are generally considered to be detrimental. Here, we show that for spin-based information processing, these fluctuations can be uniquely exploited to gate the flow of classical binary information across a magnetic chain in thermal equilibrium. Moreover, this information flow can be controlled with a modest external magnetic field that drives the system through different many-body quantum phases in which the orientation of the final spin does or does not reflect the orientation of the initial input. Our results are general for a wide class of anisotropic spin chains that act as magnetic cellular automata and suggest that quantum phase transitions play a unique role in driving classical information flow at the atomic scale. |
Patrocinador/es: | L. B. and S. B. have received funding for this research from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant agreement No. 308253 PACOMANEDIA; C. F. H. from the Leverhulme Trust (Grant No. RPG-2012-754) and EPSRC (Grant No. EP/M009564/1); J. F. R. from the UCLQ Visitors Program. |
URI: | http://hdl.handle.net/10045/86491 |
ISSN: | 0031-9007 (Print) | 1079-7114 (Online) |
DOI: | 10.1103/PhysRevLett.118.147203 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2017 American Physical Society |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1103/PhysRevLett.118.147203 |
Aparece en las colecciones: | INV - Grupo de Nanofísica - Artículos de Revistas Investigaciones financiadas por la UE |
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2017_Banchi_etal_PhysRevLett.pdf | 314,1 kB | Adobe PDF | Abrir Vista previa | |
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