铷原子玻色-爱因斯坦凝聚体的1 Hz产生
Production of Rubidium Bose-Einstein Condensates at a 1 Hz Rate
摘要：
我们提出了一个实验装置，产生$^{87}$ Rb原子的玻色-爱因斯坦凝聚体（BEC）在1赫兹的速度。作为系统连续操作能力的证明，在32.1秒内产生并成像了30个BEC。没有成像，一个单一的BEC可以产生在953毫秒。该系统使用原子芯片，以限制在一个酒窝陷阱的频率超过1 kHz的原子。利用这种紧密的阱，蒸发冷却的持续时间减少到小于0.5s。使用主成分分析，通过提取对方差的主要贡献来洞察噪声和漂移的最大来源。该系统利用一个紧凑的物理包，可以与激光器和电子设备集成，以创建一个可移动的超冷原子设备，用于实验室环境之外的应用。
英文摘要：
We present an experimental apparatus that produces Bose-Einstein condensates (BECs) of $^{87}$Rb atoms at a rate of 1 Hz. As a demonstration of the system's ability to operate continuously, 30 BECs were produced and imaged in 32.1 s. Without imaging, a single BEC could be produced in 953 ms. The system uses an atom chip to confine atoms in a dimple trap with frequencies exceeding 1 kHz. With this tight trap, the duration of evaporative cooling was reduced to less than 0.5 s. Using principal component analysis, insight into the largest sources of noise and drift was obtained by extracting the dominant contributions to the variance. The system utilizes a compact physics package that can be integrated with lasers and electronics to create a transportable ultracold-atom device for applications outside of a laboratory environment.
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