Interaction-induced decoherence of atomic BLOCH oscillations.
We show that the energy spectrum of the Bose-Hubbard model amended by a static field exhibits Wigner-Dyson level statistics. In itself a characteristic signature of quantum chaos, this induces the irreversible decay of Bloch oscillations of cold, interacting atoms loaded into an optical lattice, and provides a Hamiltonian model for interaction-induced decoherence.
Buchleitner
Andreas
A
Max-Planck-Institut für Physik komplexer Systeme, D-01187 Dresden, Germany.
Kolovsky
Andrey R
AR