ISSN:
1434-6079
Keywords:
PACS. 03.65.Bz Foundations, theory of measurement, miscellaneous theories (including Aharonov-Bohm effect, Bell inequalities, Berry's phase) - 42.50.Vk Mechanical effects of light on atoms, molecules, electrons, and ions - 32.80.Pj Optical cooling of atoms; trapping
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: We present a method for the direct measurement of the Wigner-function matrix for complex vibronic states of a trapped atom, that is suited to analyse the entanglement between two motional degrees of freedom and the internal electronic dynamics. It is a generalisation of the method for the determination of vibronic quantum states [S. Wallentowitz, R.L. de Matos Filho, W. Vogel, Phys. Rev. A 56, 1205 (1997)] in conjunction with the scheme for the direct observation of the Wigner function of a single motional degree of freedom [L.G. Lutterbach, L. Davidovich, Phys. Rev. Lett. 78, 2547 (1997)]. The major advantage of the present method is that it reduces the experimental efforts substantially. On the other hand, it is demonstrated that the nonlinear vibronic coupling necessary for this method turns out to be its main limitation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100530050323
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