POLETTI Dario Poster BEC induced quantum ratchet

particle leads to the formation of a dynamical steady state which is characterized by an effective temperature above the temperature of the environment [1]. 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 to the Zeno anti-Zeno crossover [2] which depends, in addition to the periodicity, also on the total evolution time of the system. Moreover, we discuss how an earlier proposal to use single trapped ions as quantum simulators for open systems [3] has to be modified to implement the scheme presented here. [1] J. Piilo, S. Maniscalco, and K.-A. Suominen, Phys. Rev. A 75, 032105 (2007). [2] S. Maniscalco, J. Piilo, and K.-A. Suominen, Phys. Rev. Lett. 97, 130402 (2006). [3] J. Piilo and S. Maniscalco, Phys. Rev. A 74, 032303 (2006)