title: Disorder-induced order in two-component Bose-Einstein condensates.
abstract: We propose and analyze a general mechanism of disorder-induced order in two-component Bose-Einstein condensates, analogous to corresponding effects established for XY spin models. We show that a random Raman coupling induces a relative phase of pi/2 between the two BECs and that the effect is robust. We demonstrate it in one, two, and three dimensions at T=0 and present evidence that it persists at small T>0. Applications to phase control in ultracold spinor condensates are discussed.
authors.affiliation: ICFO-Institut de Ciències Fotòniques, Parc Mediterrani de la Tecnologia, Castelldefels, Barcelona, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Niederberger
authors.forename: T
authors.initials: T
authors.lastname: Schulte
authors.forename: J
authors.initials: J
authors.lastname: Wehr
authors.forename: M
authors.initials: M
authors.lastname: Lewenstein
authors.forename: L
authors.initials: L
authors.lastname: Sanchez-Palencia
authors.forename: K
authors.initials: K
authors.lastname: Sacha