Reconstruction of the two-mode vibronic quantum state of a trapped atom

S. Wallentowitz, R. L. De Matos Filho, Shih-Chuan Gou, W. Vogel

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)397-405
Number of pages9
JournalEuropean Physical Journal D
Issue number3
Publication statusPublished - 1999 Jan 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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