Physics – Quantum Physics
Scientific paper
2001-03-31
Phys. Rev. A 65 (2002) 053401
Physics
Quantum Physics
8 pages, 5 figures
Scientific paper
10.1103/PhysRevA.65.053401
We study cooling of the collective vibrational motion of two 138Ba+ ions confined in an electrodynamic trap and irradiated with laser light close to the resonances S_1/2-P_1/2 (493 nm) and P_1/2-D_3/2 (650 nm). The motional state of the ions is monitored by a spatially resolving photo multiplier. Depending on detuning and intensity of the cooling lasers, macroscopically different motional states corresponding to different ion temperatures are observed. We also derive the ions' temperature from detailed analytical calculations of laser cooling taking into account the Zeeman structure of the energy levels involved. The observed motional states perfectly match the calculated temperatures. Significant heating is observed in the vicinity of the dark resonances of the Zeeman-split S_1/2-D_3/2 Raman transitions. Here two-photon processes dominate the interaction between lasers and ions. Parameter regimes of laser light are identified that imply most efficient laser cooling.
Abich K.
Neuhauser W.
Reiss David
Toschek Peter E.
Wunderlich Ch.
No associations
LandOfFree
Raman cooling and heating of two trapped Ba+ ions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Raman cooling and heating of two trapped Ba+ ions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raman cooling and heating of two trapped Ba+ ions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-406470