Departamento de Química Física, UPV/EHU, B. Sarriena s/n, 48940, Leioa, Bizkaia, Spain.
Sci Rep. 2017 Jul 18;7(1):5753. doi: 10.1038/s41598-017-05823-x.
We study the shuttling of an atom in a trap with controllable position and frequency. Using invariant-based inverse engineering, protocols in which the trap is simultaneously displaced and expanded are proposed to speed up transport between stationary trap locations as well as launching processes with narrow final-velocity distributions. Depending on the physical constraints imposed, either simultaneous or sequential approaches may be faster. We consider first a perfectly harmonic trap, and then extend the treatment to generic traps. Finally, we apply this general framework to a double-well potential to separate different motional states with different launching velocities.
我们研究了在具有可控位置和频率的陷阱中原子的穿梭。利用基于不变量的逆工程，提出了同时位移和扩展陷阱的方案，以加快在固定陷阱位置之间的传输速度，以及具有窄终速度分布的发射过程。根据施加的物理约束，同时或顺序方法可能会更快。我们首先考虑了一个完美的谐波陷阱，然后将处理方法扩展到通用陷阱。最后，我们将这个通用框架应用于双阱势中，以分离具有不同发射速度的不同运动状态。
