Classical aspects of ultracold atom wavepacket motion through microstructured waveguide bends

Details Classical aspects of ultracold atom wavepacket motion through microstructured waveguide bends Classical aspects of ultracold atom wavepacket motion through microstructured waveguide bends

2004-02-06

arxiv.org/abs/physics/0402032v1

Phys. Rev. A 69, 053620 (2004)

Physics

Atomic Physics

25 pages, 7 figures

Scientific paper

10.1103/PhysRevA.69.053620

The properties of low-density, low-energy matter wavepackets propagating through waveguide bends are investigated. Time-dependent quantum mechanical calculations using simple harmonic oscillator confining potentials are performed for a range of parameters close to those accessible by recent ``atom chip''-based experiments. We compare classical calculations based on Ehrenfest's theorem to these results to determine whether classical mechanics can predict the amount of transverse excitation as measured by the transverse heating. The present results thus elucidate some of the limits for which matter wave propagation through microstructures can be reliably considered using classical particle motion.

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