Quantum Brownian motion for periodic coupling to an Ohmic bath

J. Piilo, S. Maniscalco, and K.-A. Suominen
Phys. Rev. A 75, 032105 – Published 7 March 2007

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 τ, also on the total evolution time of the system.

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  • Received 28 November 2006

DOI:https://doi.org/10.1103/PhysRevA.75.032105

©2007 American Physical Society

Authors & Affiliations

J. Piilo, S. Maniscalco, and K.-A. Suominen

  • Department of Physics, University of Turku, FI-20014 Turun yliopisto, Finland

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Issue

Vol. 75, Iss. 3 — March 2007

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