20th CEMS Colloquium


Dr. Takeshi Fukuhara (Unit Leader, Quantum Many-Body Dynamics Research Unit, RIKEN CEMS)


17:30 - 18:30, September 17, 2014 (Wednesday)


Okochi-Hall, RIKEN


Non-equilibrium quantum dynamics of spin impurities


Ultracold atoms offer unique opportunities to study quantum many-body systems. Especially, atoms loaded into periodic potential (optical lattice) generated by a laser beam can mimic fundamental models such as the Hubbard model or the Heisenberg spin model. An important feature of the ultracold-atom systems is less dissipation and less decoherence, which enables to access non-equilibrium dynamics of such systems. In this talk I will present the quantum dynamics of mobile spin impurities in a one-dimensional Heisenberg spin chain realized with ultracold bosonic atoms in an optical lattice.