Berlin 2005 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
Q: Quantenoptik und Photonik
Q 21: Poster Quanteneffekte
Q 21.3: Poster
Montag, 7. März 2005, 11:00–12:30, Poster HU
Preparation and experimental characterisation of coherent superposition states of two degenerate levels — •Manfred Heinz, Frank Vewinger, Christian Barthel, and Klaas Bergmann — FB Physik, TU Kaiserslautern, 67663 Kaiserslautern
We report on the preparation of superposition states of two or more degenerate levels in a J=2 metastable state of Neon. In particular, we demonstrate a method for the measurement of the relative phase between the states. The superposition state can either be prepared between the magnetic sublevels M=+1 and M=−1 by using the tripod STIRAP scheme [1,2] or between the sublevels M=0 and M=±2 by the use of twin STIRAP. The relative phases of all the superposition states can be measured by coherently coupling the levels 3P2→ 3P1 by a linearly polarized laser, followed by a detection of the population in the 3P2(m=±2) states as a function of the polarization angle of that laser [3].
[1] H. Theuer et al. Optics Express, 4(2):77-83, 1999
[2] B. W. Shore et al. Optics Communications, 155:144-154, 1998
[3] F. Vewinger et al. Physical Review Letters, 91(21), 2003