Factorization of the dephasing process in a quantum open system
نویسندگان
چکیده
منابع مشابه
Factorization of the dephasing process in a quantum open system.
The fluctuation-dissipation relation is well known for a quantum open system with energy dissipation. In this paper a similar underlying relation is found between the bath fluctuation and the dephasing of the quantum open system, for which energy is conserved, but the information is leaking into the bath. To obtain this relation we revisit the universal, but simple dephasing model with a quantu...
متن کاملFactorization of Dephasing Process in Quantum Open System
The fluctuation-dissipation relation is well known for the quantum open system with energy dissipation. In this paper a similar underlying relation is found between the bath fluctuation and the dephasing of the quantum open system, of which energy is conserved, but the information is leaking into the bath. To obtain this relation we revisit the universal, but simple dephasing model with quantum...
متن کاملDephasing in Open Quantum Dots
Shape-averaged magnetoconductance (weak localization) is used for the first time to obtain the electron phase coherence time tf in open ballistic GaAs quantum dots. Values for tf in the range of temperature T from 0.34 to 4 K are found to be independent of dot area, and are not consistent with the tf ~ T22 behavior expected for isolated dots. Surprisingly, tfsT d agrees quantitatively with the ...
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چکیده ندارد.
15 صفحه اولTheory of dephasing by external perturbation in open quantum dots
The anomalous magnetoresistance of bulk disordered systems is governed by weak localization ~WL!. Being an interference phenomenon, it is extremely sensitive to inelastic processes commonly referred to as dephasing. Recently, another object for the study of quantum effects appeared—ballistic quantum dots. In the absence of inelastic processes, the transport properties of the dots are well descr...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2007
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.75.011105