@article{37991, keywords = {arrays, beam splitter, Bose-Einstein condensation, chip, dark solitons, discrete soliton networks, gas, neutral atoms, states, wires}, author = {P. G. Kevrekidis and D. J. Frantzeskakis and G. Theocharis and I. G. Kevrekidis}, title = {Guidance of matter waves through Y-junctions}, abstract = {

We discuss the concept of Y-junctions for matter waves and investigate their guidance properties, focusing on the case of Bose-Einstein condensates with attractive interatomic interactions. We examine both discrete and continuous models, respectively relevant to Y-junctions formed in optical lattices (OL) and magnetic traps (MT). We find a strong dependence of the transmitted fraction of the condensate (in the OL case) on the angle with a maximum (per arm) of approximately 30\%. In the MT case, we show that the presence of the junction{\textquoteright}s wedge can prevent collapse of the original condensate. (C) 2003 Elsevier B.V. All rights reserved.

}, year = {2003}, journal = {Physics Letters A}, volume = {317}, pages = {513-522}, month = {10/2003}, isbn = {0375-9601}, language = {English}, }