Matterwave Transport Without Transit

Details Matterwave Transport Without Transit Matterwave Transport Without Transit

2007-09-07

arxiv.org/abs/0709.0985v1

Phys. Rev. A 77, 061602(R) (2008)

Physics

Condensed Matter

Other Condensed Matter

6 pages, 4 figures

Scientific paper

Classically it is impossible to have transport without transit, i.e., if the points one, two and three lie sequentially along a path then an object moving from one to three must, at some point in time, be located at two. However, for a quantum particle in a three-well system it is possible to transport the particle between wells one and three such that the probability of finding it at any time in the classically accessible state in well two is negligible. We consider theoretically the analogous scenario for a Bose-Einstein condensate confined within a three well system. In particular, we predict the adiabatic transportation of an interacting Bose-Einstein condensate of 2000 Li atoms from well one to well three without transiting the allowed intermediate region. To an observer of this macroscopic quantum effect it would appear that, over a timescale of the order of one second, the condensate had transported, but not transited, a macroscopic distance of 20 microns between wells one and three.

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