title: Vacuum-field level shifts in a single trapped ion mediated by a single distant mirror.
abstract: A distant mirror leads to a vacuum-induced level shift in a laser-excited atom. This effect has been measured with a single mirror 25 cm away from a single, trapped barium ion. This dispersive action is the counterpart to the mirror's dissipative effect, which has been shown earlier to effect a change in the ion's spontaneous decay [Nature (London) 413, 495 (2001)]]. The experimental data are well described by eight-level optical Bloch equations which are amended to take into account the presence of the mirror according to the model in Phys. Rev. A 66, 023816 (2002)]. Observed deviations from simple dispersive behavior are attributed to multilevel effects.
authors.affiliation: Institut für Experimentalphysik, Universität Innsbruck, A-6020 Innsbruck, Austria.
authors.forename: M A
authors.initials: MA
authors.lastname: Wilson
authors.forename: P
authors.initials: P
authors.lastname: Bushev
authors.forename: J
authors.initials: J
authors.lastname: Eschner
authors.forename: F
authors.initials: F
authors.lastname: Schmidt-Kaler
authors.forename: C
authors.initials: C
authors.lastname: Becher
authors.forename: R
authors.initials: R
authors.lastname: Blatt
authors.forename: U
authors.initials: U
authors.lastname: Dorner