Seminar
Wednesday, 25 May, 2011
Group Seminar MPQ: Quantum Walk of Two Bosons - from single photons to interacting atoms
Wednesday, 25.05.2011 12:30 (s.t.) in B 0.21, MPQ Garching
Yoav Lahini, The Weizmann Institute of Science
The talk will describe a study of the bosonic two-particle quantum walk. The combined effect of the lattice potential, interactions and Hanbury-Brown Twiss interference results in unique spatial correlations which depend on the strength of the interaction, but not on its sign. The results are explained in light of the two-particle spectrum and the physics of attractively and repulsively bound pairs. We experimentally measure the weak interaction limit of these effects in nonlinear photonic lattices. Finally, we discuss the effects of disorder and suggest an experimental approach to observe the strong interaction limit using single atoms in optical lattices.