TY - JOUR

T1 - Molecular Binding in Interacting Quantum Walks

AU - Ahlbrecht, Andre

AU - Alberti, Andrea

AU - Meschede, Dieter

AU - Scholz, Volkher B.

AU - Werner, Albert H.

AU - Werner, Reinhard F.

PY - 2012

Y1 - 2012

N2 - We investigate a system of two atoms in an optical lattice, performing a quantum walk by state-dependent shift operations and a coin operation acting on the internal states. The atoms interact, e.g., by cold collisions, whenever they are in the same potential well of the lattice. Under such conditions they typically develop a bound state, so that the two atoms effectively perform a quantum walk together, rarely moving further from each other than a few lattice sites. The theoretical analysis is based on a theory of quantum walks with a point defect, applied to the difference variable. We also discuss the feasibility of an experimental realization in existing quantum walk experiments.

AB - We investigate a system of two atoms in an optical lattice, performing a quantum walk by state-dependent shift operations and a coin operation acting on the internal states. The atoms interact, e.g., by cold collisions, whenever they are in the same potential well of the lattice. Under such conditions they typically develop a bound state, so that the two atoms effectively perform a quantum walk together, rarely moving further from each other than a few lattice sites. The theoretical analysis is based on a theory of quantum walks with a point defect, applied to the difference variable. We also discuss the feasibility of an experimental realization in existing quantum walk experiments.

U2 - 10.1088/1367-2630/14/7/073050

DO - 10.1088/1367-2630/14/7/073050

M3 - Article

VL - 14

SP - 073050

JO - New J. Phys.

JF - New J. Phys.

SN - 1367-2630

ER -