从全光逃逸蒸发到玻色-爱因斯坦凝聚
All-optical runaway evaporation to Bose-Einstein condensation
摘要：
我们证明了直接使用严格限制的光学偶极阱的失控蒸发冷却，并实现了1.5x10^5 87 Rb原子的冷凝物的快速生产。我们的计划的特点是由一个独立的控制的光阱的限制和深度，允许强制蒸发冷却，而不降低陷阱的刚度。虽然我们的配置是特别适合于87 Rb原子的情况下，在1565 nm的光阱，其中一个有效的初始加载是可能的，我们的计划是一般的，应该允许在恒定的刚度为大多数物种的全光学蒸发冷却。
英文摘要：
We demonstrate runaway evaporative cooling directly with a tightly confining optical dipole trap and achieve fast production of condensates of 1.5x10^5 87Rb atoms. Our scheme is characterized by an independent control of the optical trap confinement and depth, permitting forced evaporative cooling without reducing the trap stiffness. Although our configuration is particularly well suited to the case of 87Rb atoms in a 1565nm optical trap, where an efficient initial loading is possible, our scheme is general and should allow all-optical evaporative cooling at constant stiffness for most species.
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