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Quantum Physics

Title: Atomic time-of-arrival measurements with a laser of finite beam width

Abstract: A natural approach to measure the time of arrival of an atom at a spatial region is to illuminate this region with a laser and detect the first fluorescence photons produced by the excitation of the atom and subsequent decay. We investigate the actual physical content of such a measurement in terms of atomic dynamical variables, taking into account the finite width of the laser beam. Different operation regimes are identified, in particular the ones in which the quantum current density may be obtained.
Comments: 7 figures
Subjects: Quantum Physics (quant-ph)
DOI: 10.1088/0953-4075/36/12/320
Cite as: arXiv:quant-ph/0302201
  (or arXiv:quant-ph/0302201v1 for this version)

Submission history

From: J. G. Muga [view email]
[v1] Fri, 28 Feb 2003 10:44:26 GMT (398kb)