Detector's quantum backaction effects on a mesoscopic conductor and fluctuation-dissipation relation
| Autor: | Magazzù, L., Valenti, D., Spagnolo, B., Martin, T., Falci, G., Paladino, E. |
|---|---|
| Přispěvatelé: | Dipartimento di Fisica e Chimica [Palermo] (DiFC), Università degli studi di Palermo - University of Palermo, Lobachevsky State University of Nizhny Novgorod, Lobachevsky State University [Nizhni Novgorod], Institute of Physics, University of Augsburg, Universität Augsburg [Augsburg], Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), CPT - E6 Nanophysique, Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), MATIS CNR-INFM Dipartimento di Metodologie Fisiche e Chimiche (DMFCI) (MATIS), Università degli studi di Catania = University of Catania (Unict)- Istituto Nazionale di Fisica Nucleare (INFN), Istituto Nazionale di Fisica Nucleare, Sezione di Catania (INFN), Università degli studi di Catania = University of Catania (Unict), University of Nizhny Novgorod, Università degli studi di Catania [Catania]- Istituto Nazionale di Fisica Nucleare (INFN), Università degli studi di Catania [Catania], Magazzù, L., Valenti, D., Spagnolo, B., Martin, T., Falci, G., Paladino, E. |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
fluctuation-dissipation relation
mesoscopic conductor Quantum backaction quantum Langevin equation Physics and Astronomy (all) Quantum backaction mesoscopic conductor quantum Langevin equation fluctuation-dissipation relation Settore FIS/03 - Fisica Della Materia [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] |
| Zdroj: | Fortschritte der Physik / Progress of Physics Fortschritte der Physik / Progress of Physics, 2017, Special Issue: International Conference Frontiers of Quantum and Mesoscopic Thermodynamics Prague, Czech Republic 27 July– 1 August 2015, 65 (6-8), pp.1600059. ⟨10.1002/prop.201600059⟩ |
| DOI: | 10.1002/prop.201600059⟩ |
| Popis: | International audience; When measuring quantum mechanical properties of charge transport in mesoscopic conductors, backaction effects occur. We consider a measurement setup with an elementary quantum circuit, composed of an inductance and a capacitor, as detector of the current flowing in a nearby quantum point contact. A quantum Langevin equation for the detector variable including backaction effects is derived. Differences with the quantum Langevin equation obtained in linear response are pointed out. In this last case, a relation between fluctuations and dissipation is obtained, provided that an effective temperature of the quantum point contact is defined. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|