Ultracold atoms in multiple radio-frequency dressed adiabatic potentials
Ultracold atoms in multiple radio-frequency dressed adiabatic potentials
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DOI：
10.1103/physreva.97.013616
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发表时间：
2017-06
影响因子：
2.9
通讯作者：
T. Harte;E. Bentine;K. Luksch;A. Barker;D. Trypogeorgos;B. Yuen;C. Foot
中科院分区：
文献类型：
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作者：
T. Harte;E. Bentine;K. Luksch;A. Barker;D. Trypogeorgos;B. Yuen;C. Foot
我们提出了第一个实验演示的多射频修饰的超冷原子的可配置磁约束的潜力。我们加载冷\Rb{87}原子到一个可调的势垒高度的双阱势，形成由三个射频施加到原子在一个静态的四极磁场。我们的多射频方法可以精确控制双阱特性，包括单个威尔斯的深度和势垒的高度，并使原子在可用的捕获几何结构之间可靠地转移。我们的特点是多射频穿着系统使用射频光谱，找到良好的协议与本征值数值计算使用Floquet理论。这种方法产生的捕获电位可以通过改变所施加的修整场的振幅、偏振和频率来重新配置，并且可以容易地用附加的修整频率来扩展。
We present the first experimental demonstration of a multiple-radiofrequency dressed potential for the configurable magnetic confinement of ultracold atoms. We load cold \Rb{87} atoms into a double well potential with an adjustable barrier height, formed by three radiofrequencies applied to atoms in a static quadrupole magnetic field. Our multiple-radiofrequency approach gives precise control over the double well characteristics, including the depth of individual wells and the height of the barrier, and enables reliable transfer of atoms between the available trapping geometries. We have characterised the multiple-radiofrequency dressed system using radiofrequency spectroscopy, finding good agreement with the eigenvalues numerically calculated using Floquet theory. This method creates trapping potentials that can be reconfigured by changing the amplitudes, polarizations and frequencies of the applied dressing fields, and easily extended with additional dressing frequencies.