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Title: Quantum Brownian motion for periodic coupling to an Ohmic bath

Abstract

We show theoretically how the periodic coupling between an engineered reservoir and a quantum Brownian particle leads to the formation of a dynamical steady-state which is characterized by an effective temperature above the temperature of the environment. The average steady-state energy of the system has a higher value than expected from the environmental properties. The system experiences repeatedly a non-Markovian behavior--as a consequence the corresponding effective decay for long evolution times is always on average stronger than the Markovian one. We also highlight the consequences of the scheme for the Zeno-anti-Zeno crossover which depends, in addition to the periodicity {tau}, also on the total evolution time of the system.

Authors:
; ;  [1]
  1. Department of Physics, University of Turku, FI-20014 Turun yliopisto (Finland)
Publication Date:
OSTI Identifier:
20982236
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.75.032105; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BROWNIAN MOVEMENT; COUPLING; MARKOV PROCESS; PERIODICITY; QUANTUM MECHANICS; STEADY-STATE CONDITIONS

Citation Formats

Piilo, J., Maniscalco, S., and Suominen, K.-A. Quantum Brownian motion for periodic coupling to an Ohmic bath. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.032105.
Piilo, J., Maniscalco, S., & Suominen, K.-A. Quantum Brownian motion for periodic coupling to an Ohmic bath. United States. doi:10.1103/PHYSREVA.75.032105.
Piilo, J., Maniscalco, S., and Suominen, K.-A. Thu . "Quantum Brownian motion for periodic coupling to an Ohmic bath". United States. doi:10.1103/PHYSREVA.75.032105.
@article{osti_20982236,
title = {Quantum Brownian motion for periodic coupling to an Ohmic bath},
author = {Piilo, J. and Maniscalco, S. and Suominen, K.-A.},
abstractNote = {We show theoretically how the periodic coupling between an engineered reservoir and a quantum Brownian particle leads to the formation of a dynamical steady-state which is characterized by an effective temperature above the temperature of the environment. The average steady-state energy of the system has a higher value than expected from the environmental properties. The system experiences repeatedly a non-Markovian behavior--as a consequence the corresponding effective decay for long evolution times is always on average stronger than the Markovian one. We also highlight the consequences of the scheme for the Zeno-anti-Zeno crossover which depends, in addition to the periodicity {tau}, also on the total evolution time of the system.},
doi = {10.1103/PHYSREVA.75.032105},
journal = {Physical Review. A},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}