Controlling heat and particle currents in nanodevices by quantum observation
THERMOELECTRICS: Observe and control The presence of a quantum observer, acting locally in a thermoelectric nanodevice, is shown to be enough to change its heat and electronic transport path. In quantum mechanics the observation of a phenomenon can affect its outcome. Local quantum observation of a...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
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Nature Portfolio
2017
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/6d4959c4bbf04123b14deb814354c7dd |
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| Sumario: | THERMOELECTRICS: Observe and control The presence of a quantum observer, acting locally in a thermoelectric nanodevice, is shown to be enough to change its heat and electronic transport path. In quantum mechanics the observation of a phenomenon can affect its outcome. Local quantum observation of a system can induce continuous and dynamic changes in its quantum coherence, thus providing another level of control of its properties. Angel Rubio and colleagues study theoretically this idea in a nanodevice whose left and right side are connected to hot and thermal baths, respectively; this configuration forces the energy and particles to flow clockwise. Introduction of a quantum observer however, induces a counter-clockwise particle ring-current due to the localized electronic state and symmetry breaking of the system. Such heat flow control might prove useful for spintronics, quantum phononics, and sensing devices. |
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