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Phase-Dependent Effects in Stern-Gerlach Experiments |
| XU Xu, ZHOU Xiao-Ji |
| School of Electronics Engineering and Computer Science, Peking University, Beijing 100871 |
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| Cite this article: |
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XU Xu, ZHOU Xiao-Ji 2010 Chin. Phys. Lett. 27 010309 |
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Abstract In the frame of quantum mechanics, we consider an ensemble of spin-1/2 neutral particles passing through a Stern-Gerlach apparatus and explore how their motions depend on the initial phase difference between two internal spin states. Assuming the particles moving along y-axis, due to the initial phase difference between spin states, they not only split along the longitudinal direction (z-axis) but also separate along the lateral direction (x-axis). The dependence of the lateral displacement on the initial phase difference reminds one of the picture of a quantum interference. This generalized interference provides an alternative approach to measuring the initial phase difference. The experimental realization with ultracold atoms or Bose-Einstein condensates is also discussed.
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| Keywords:
03.65.Sq
03.65.Ta
03.65.Bz
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Received: 27 September 2009
Published: 30 December 2009
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| PACS: |
03.65.Sq
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(Semiclassical theories and applications)
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03.65.Ta
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(Foundations of quantum mechanics; measurement theory)
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03.65.Bz
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