BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Aye Win\, Old Dominion University\n\n
The strong long-range i nteraction between ultracold Rydberg atoms gives rise to a number of inter esting phenomena that have been studied in recent years including resonant energy transfer collisions\, many-body quantum simulations\, quantum info rmation processing\, and ultracold plasmas. The dipole-dipole interaction between a pair of Rydberg atoms can result in a state-changing interaction if the energy defect for the process is small. The collisional energy tra nsfer process can be tuned into resonance via the Stark effect. Such reson ances are known as Fö\;rster resonances. In this talk\, we will discus s a recent study of the time dependence of resonant energy transfer proces s and of a catalysis effect in the resonant energy transfer between ultrac old 85Rb Rydberg atoms. We have investigated the energy transfer process o f 34p + 34p &rarr\; 34s + 35s\, and observed Stark-tuned Fö\;rster res onances. When additional Rydberg atoms of 34d state are included in the in teraction\, an increase in the population of 34s states atoms was observed . Although the 34d state atoms do not directly participate in the resonant energy transfer process that produces 34s state atoms (shown above)\, the y add an additional interaction channel 34p + 34d &rarr\; 34d + 34p that i s resonant for all electric fields and results in a change in the rate in which 34s atoms are produced. We will present our experimental results and compare them with model simulations. \;
\n DTSTART:20160301T203000Z LOCATION:Physics Building\, Room 204 SUMMARY:"Catalysis of Stark-tuned Interactions between Ultracold Rydberg At oms END:VEVENT END:VCALENDAR