title: Total current blockade in an ultracold dipolar quantum wire.
abstract: Cold-atom systems offer a great potential for the future design of new mesoscopic quantum systems with properties that are fundamentally different from semiconductor nanostructures. Here, we investigate the quantum-gas analogue of a quantum wire and find a new scenario for the quantum transport: Attractive interactions may lead to a complete suppression of current in the low-bias range, a total current blockade. We demonstrate this effect for the example of ultracold quantum gases with dipolar interactions.
authors.affiliation: Mathematical Physics and Nanometer Structure Consortium, nmC@LU, Lund University, Box 118, 22100 Lund, Sweden.
authors.forename: L H
authors.initials: LH
authors.lastname: Kristinsdóttir
authors.forename: O
authors.initials: O
authors.lastname: Karlström
authors.forename: J
authors.initials: J
authors.lastname: Bjerlin
authors.forename: J C
authors.initials: JC
authors.lastname: Cremon
authors.forename: P
authors.initials: P
authors.lastname: Schlagheck
authors.forename: A
authors.initials: A
authors.lastname: Wacker
authors.forename: S M
authors.initials: SM
authors.lastname: Reimann