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arXiv 2607.25783physics.atom-phcond-mat.quant-gasphysics.chem-phquant-ph

通过微波辅助碰撞对分子阵列进行确定性加载

Deterministic loading of molecular arrays by microwave-assisted collisions

Etienne F. Walraven, Kang Feng, Jonas Rodewald, Michael R. Tarbutt, Tijs Karman

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中文总结 AI 辅助

研究如何通过微波辅助碰撞对分子阵列进行确定性加载,利用将分子置于特定激发态抑制碰撞损失,控制分子碰撞状态和能量释放,探索确定性弹出策略,依赖现有技术预测高达96%的填充率,为可扩展分子阵列发展助力。

中文摘要 AI 辅助

分子镊子阵列在量子模拟、传感和计算方面前景广阔,提高加载效率的方法将使其受益。光辅助碰撞是增强原子镊子阵列加载方法的基础,但由于碰撞损失,该方法不能直接扩展到分子阵列。我们展示了如何通过将分子置于旋转或振动激发态来抑制碰撞损失,使被搁置分子通过排斥范德华相互作用与新加载分子相互作用。通过引入微波辅助碰撞,我们展示了如何控制一对分子碰撞中的最终状态和释放的能量。在这种受控碰撞之后,可以弹出两个分子中的一个,我们探索了几种确保确定性弹出的策略。我们的方案依赖于目前可用的可激光冷却分子技术,我们预测可实现的填充率高达96%,为可扩展分子阵列铺平了道路。

英文摘要

Molecular tweezer arrays offer great prospects for quantum simulation, sensing, and computing, and would benefit from methods that enhance loading efficiency. Whereas light-assisted collisions underpin enhanced loading methods for atomic tweezer arrays, this approach cannot be directly extended to molecular arrays due to collisional loss. We show how this collisional loss can be suppressed by shelving molecules in rotationally or vibrationally excited states, so that a shelved molecule interacts with a newly loaded molecule through a repulsive van der Waals interaction. By introducing microwave assisted collisions, we show how to control the final states and the energy released in a collision between a pair of molecules. Following this controlled collision, one of the two molecules can be ejected, and we explore several strategies for ensuring deterministic ejection. Our schemes rely on currently available techniques for laser-coolable molecules, and we predict achievable filling fractions up to 96%, paving the way for scalable molecular arrays.

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