Nanoscale atomic waveguides with suspended carbon nanotubes

Details Nanoscale atomic waveguides with suspended carbon nanotubes Nanoscale atomic waveguides with suspended carbon nanotubes

2005-05-27

arxiv.org/abs/quant-ph/0505210v2

Appl. Phys. B 81, 1075-1080 (2005)

Physics

Quantum Physics

Replaced with the published version, 7 pages, 3 figures

Scientific paper

10.1007/s00340-005-1971-6

We propose an experimentally viable setup for the realization of one-dimensional ultracold atom gases in a nanoscale magnetic waveguide formed by single doubly-clamped suspended carbon nanotubes. We show that all common decoherence and atom loss mechanisms are small guaranteeing a stable operation of the trap. Since the extremely large current densities in carbon nanotubes are spatially homogeneous, our proposed architecture allows to overcome the problem of fragmentation of the atom cloud. Adding a second nanowire allows to create a double-well potential with a moderate tunneling barrier which is desired for tunneling and interference experiments with the advantage of tunneling distances being in the nanometer regime.

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