A quantum point contact for neutral atoms
原子物理
2014-01-30 v1
摘要
We show that the conductance of neutral atoms through a tightly confining waveguide constriction is quantized in units of lambda_dB^2/pi, where lambda_dB is the de Broglie wavelength of the incident atoms. Such a constriction forms the atom analogue of an electron quantum point contact and is an example of quantum transport of neutral atoms in an aperiodic system. We present a practical constriction geometry that can be realized using a microfabricated magnetic waveguide, and discuss how a pair of such constrictions can be used to study the quantum statistics of weakly interacting gases in small traps.
引用
@article{arxiv.physics/9909020,
title = {A quantum point contact for neutral atoms},
author = {J. H. Thywissen and R. M. Westervelt and M. Prentiss},
journal= {arXiv preprint arXiv:physics/9909020},
year = {2014}
}
备注
5 pages with 3 figures. To appear in Phys. Rev. Lett