Speaker: Erik Torrontegui
Affiliation: Instituto de Física Fundamental, CSIC
Date: Tuesday, 18 April 2017 at 10:00
Location: Seminar Room, Serrano 121 (CFMAC)
Any quantum system is never isolated and represents an open system. As result, the environment that surrounds the system introduces decoherence spoiling its quantum properties. Employing an alternative formalism to study open quantum systems, the Stochastic Surrogate Hamiltonian, we analyze dissipation and dephasing processes produced by a spin bath. For dissipation, we show that the Stochastic Surrogate Hamiltonian enables the simulation of thermalization beyond the weak and Markovian regimes. For dephasing, the relation with temperature is studied, showing that the effect depends on the dephasing mechanism itself.
Refs:
[1] E. Torrontegui and R. Kosloff, New J. Phys. 18, 093001 (2016).
[2] R. Baer and R. Kosloff, J. Chem. Phys. 106, 21 (1997).
[3] G. Katz, M. A. Ratner, and R. Kosloff, J. Phys. Chem. C 118, 21798 (2014).