Cavity QED with atomic mirrors

作者：Darrick E. Chang, Liang Jiang, Alexey Vyacheslavovich Gorshkov, Harry J. Kimble · 发表于：New Journal of Physics · 年份：2012 · DOI：10.1088/1367-2630/14/6/063003 · 被引用次数：278 · 研究领域：Quantum Information and Cryptography、Mechanical and Optical Resonators、Cold Atom Physics and Bose-Einstein Condensates

A promising approach to merge atomic systems with scalable photonics has emerged recently, which consists of trapping cold atoms near tapered nanofibers. Here, we describe a novel technique to achieve strong, coherent coupling between a single atom and photon in such a system. Our approach makes use of collective enhancement effects, which allow a lattice of atoms to form a high-finesse cavity within the fiber. We show that a specially designated 'impurity' atom within the cavity can experience strongly enhanced interactions with single photons in the fiber. Under realistic conditions, a 'strong coupling' regime can be reached, wherein it becomes feasible to observe vacuum Rabi oscillations between the excited impurity atom and a single cavity quantum. This technique can form the basis for a scalable quantum information network using atom–nanofiber systems.