Enhancing Dipolar Interactions between Molecules Using State-Dependent Optical Tweezer Traps.
Enhancing Dipolar Interactions between Molecules Using State-Dependent Optical Tweezer Traps.
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DOI：
10.1103/physrevlett.125.243201
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发表时间：
2020-07
影响因子：
8.6
通讯作者：
L. Caldwell;M. Tarbutt
中科院分区：
文献类型：
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作者：
L. Caldwell;M. Tarbutt
我们展示了如何状态相关的光学势可以用来捕获一对分子在不同的内部状态在一个分离远小于波长的捕获光。这种紧密的间距大大增强了偶极-偶极相互作用，我们展示了它如何用于实现分子之间的双量子比特门，比现有协议快100倍，比已经证明的旋转相干时间快。我们分析了由于超精细结构，张量光位移，光子散射和碰撞损失的并发症，并得出结论，没有一个是实施该计划的障碍。
We show how state-dependent optical potentials can be used to trap a pair of molecules in different internal states at a separation much smaller than the wavelength of the trapping light. This close spacing greatly enhances the dipole-dipole interaction and we show how it can be used to implement two-qubit gates between molecules that are 100 times faster than existing protocols and than rotational coherence times already demonstrated. We analyze complications due to hyperfine structure, tensor light shifts, photon scattering, and collisional loss, and conclude that none is a barrier to implementing the scheme.