A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Quantum Brownian motion for periodic coupling to an Ohmic bath
Tekijät: Piilo J, Maniscalco S, Suominen KA
Kustantaja: AMER PHYSICAL SOC
Julkaisuvuosi: 2007
Journal: Physical Review A
Tietokannassa oleva lehden nimi: PHYSICAL REVIEW A
Lehden akronyymi: PHYS REV A
Artikkelin numero: ARTN 032105
Vuosikerta: 75
Numero: 3
Sivujen määrä: 6
ISSN: 1050-2947
DOI: https://doi.org/10.1103/PhysRevA.75.032105
Tiivistelmä
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.
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.
Turun yliopiston Tutkimustietojärjestelmän portaali