Quantum state control via trap-induced shape resonance in ultracold atomic collisions.
Quantum state control via trap-induced shape resonance in ultracold atomic collisions.
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通过超冷原子碰撞中陷阱诱导的形状共振进行量子态控制。
DOI：
10.1103/physrevlett.91.183201
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发表时间：
2003
影响因子：
8.6
通讯作者：
E. Bolda
中科院分区：
文献类型：
--
作者：
R. Stock;I. Deutsch;E. Bolda
我们研究被囚禁但分离的超冷原子之间的受控碰撞。用一个依赖于能量的δ函数赝势模型自洽地处理原子间的相互作用，并证明了该模型的有效性。在临界分离处，分子束缚态和陷阱的振动本征态之间可以发生“陷阱诱导的形状共振”。这种共振导致避免了作为分离函数的本征谱的交叉。我们研究如何将这种新的共振用于量子控制。
We investigate controlled collisions between trapped but separated ultracold atoms. The interaction between atoms is treated self-consistently using an energy-dependent delta-function pseudopotential model, whose validity we establish. At a critical separation, a "trap-induced shape resonance" between molecular bound states and a vibrational eigenstate of the trap can occur. This resonance leads to an avoided crossing in the eigenspectrum as a function of separation. We investigate how this new resonance can be employed for quantum control.