Chip-based microtrap arrays for cold polar molecules
Chip-based microtrap arrays for cold polar molecules
复制标题
用于冷极性分子的基于芯片的微阱阵列
DOI：
10.1103/physreva.96.063416
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发表时间：
2017-12
影响因子：
2.9
通讯作者：
Yin Jianping
中科院分区：
文献类型：
--
作者：
Hou Shunyong;Wei Bin;Deng Lianzhong;Yin Jianping
与原子芯片相比，原子芯片已经成为一个强大的平台，可以执行从快速玻色-爱因斯坦凝聚（BEC）生产到原子钟的惊人应用范围，而分子芯片仅处于起步阶段。最近，一种一维电晶格被证明可以在芯片上捕获极性分子。这项出色的工作为建立分子芯片实验室开辟了道路。在这里，我们提出了一个简洁而坚固的二维电子晶格，它是由方形金线阵列组成的。源自微尺寸电极的微阱阵列提供了一个陡峭的梯度，从而允许限制轻极性和重极性分子。理论分析和数值计算使用两种类型的样品分子，ND3和SrF，以证明我们的建议的可能性。电势阱的最小高度在芯片表面以上约10 μm处，可以通过改变电极上的电压在较大范围内轻松调节。这些微阱为研究周期势中的冷分子提供了有趣的视角，例如量子计算科学、低维物理以及其他一些适用于磁或光学晶格的可能应用。二维可调电晶格有望成为未来气相分子芯片实验室的基石。
Compared to the atomic chip, which has been a powerful platform to perform an astonishing range of applications from rapid Bose-Einstein condensate (BEC) production to the atomic clock, the molecular chip is only in its infant stages. Recently a one-dimensional electric lattice was demonstrated to trap polar molecules on a chip. This excellent work opens up the way to building a molecular chip laboratory. Here we propose a two-dimensional (2D) electric lattice on a chip with concise and robust structure, which is formed by arrays of squared gold wires. Arrays of microtraps that originate in the microsize electrodes offer a steep gradient and thus allow for confining both light and heavy polar molecules. Theoretical analysis and numerical calculations are performed using two types of sample molecules, ND3 and SrF, to justify the possibility of our proposal. The height of the minima of the potential wells is about 10 μm above the surface of the chip and can be easily adjusted in a wide range by changing the voltages applied on the electrodes. These microtraps offer intriguing perspectives for investigating cold molecules in periodic potentials, such as quantum computing science, low-dimensional physics, and some other possible applications amenable to magnetic or optical lattice. The 2D adjustable electric lattice is expected to act as a building block for a future gas-phase molecular chip laboratory.
影响因子：
17.3
作者：
T. Mckeown
通讯作者：
T. Mckeown