Barium ions for quantum computation
by Dietrich, Matthew, Ph.D., UNIVERSITY OF WASHINGTON, 2009, 108 pages; 3393975

Abstract:

Barium ion is investigated as a hyperfine qubit. 137Ba + is trapped in a linear Paul trap and laser cooled. Isotope selective photoionization is employed to improve trapping from an isotopically inpure source. Optical pumping into the magnetically insensitive 2S 1/2(F=2) mF = 0 state is shown, and readout by electron shelving into the 2D5/2 is demonstrated both directly and by adiabatic passage. Rabi flops between the 2S1/2 F=1 and F=2 states is accomplished by exposure to 8.037 GHz microwave radiation.

Several methods of locking the cooling lasers have been attempted and are discussed. Stabilization of the infrared laser used to drive the D 5/2 ← S1/2 transition is of particular interest, and several novel technologies are tested in this purpose.

 
AdviserBoris Blinov
SchoolUNIVERSITY OF WASHINGTON
SourceDAI/B 71-02, p. , Mar 2010
Source TypeDissertation
SubjectsAtomic physics
Publication Number3393975
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