FOCUS Center, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA.
Phys Rev Lett. 2011 Dec 23;107(26):263001. doi: 10.1103/PhysRevLett.107.263001. Epub 2011 Dec 20.
Rubidium Rydberg atoms are laser excited and subsequently trapped in a one-dimensional optical lattice (wavelength 1064 nm). Efficient trapping is achieved by a lattice inversion immediately after laser excitation using an electro-optic technique. The trapping efficiency is probed via analysis of the trap-induced shift of the two-photon microwave transition 50S→51S. The inversion technique allows us to reach a trapping efficiency of 90%. The dependence of the efficiency on the timing of the lattice inversion and on the trap laser power is studied. The dwell time of 50D(5/2) Rydberg atoms in the lattice is analyzed using lattice-induced photoionization.
铷原子被激光激发，然后被囚禁在一维光学晶格中（波长为 1064nm）。激光激发后，通过电光技术立即进行晶格反转，实现了高效的捕获。通过分析双光子微波跃迁 50S→51S 引起的陷阱位移来探测陷阱的捕获效率。反转技术使我们能够达到 90%的捕获效率。研究了效率对晶格反转定时和陷阱激光功率的依赖性。利用晶格诱导光电离分析了 50D(5/2)里德堡原子在晶格中的停留时间。
