Collisional Blockade in Microscopic Optical Dipole Traps

作者：Nicolas Schlosser, G. Reymond, Philippe Grangier · 发表于：Physical Review Letters · 年份：2002 · DOI：10.1103/physrevlett.89.023005 · 被引用次数：276 · 研究领域：Cold Atom Physics and Bose-Einstein Condensates、Quantum Information and Cryptography、Quantum optics and atomic interactions

We analyze the operating regimes of a very small optical dipole trap, loaded from a magneto-optical trap, as a function of the atom loading rate, i.e., the number of atoms per second entering the dipole trap. We show that, when the dipole trap volume is small enough, a "collisional blockade" mechanism locks the average number of trapped atoms on the value 0.5 over a large range of loading rates. We also discuss the "weak loading" and "strong loading" regimes outside the blockade range, and we demonstrate experimentally the existence of these three regimes.