双区域镱镊子系统，配备真空内纳米光纤腔

中文摘要 AI 辅助

我们展示了一种双区域实验装置，用于在科学腔室内利用光镊捕获费米同位素镱-171（${}^{171}\mathrm{Yb}$）的单原子，该腔室内包含一根真空内纳米光纤腔。源区域位于距科学腔室约$240\\,\mathrm{mm}$处，从而保留了腔室周围用于高数值孔径镊子光学元件的光学通路。基于纵向移动黏胶的脉冲输运序列将原子脉冲发射向科学腔室，在那里它们被减速并在磁光阱中重新捕获。随后，我们将单原子装载到距纳米光纤约$50\\,\mathrm{\mu m}$的$2\times2$镊子阵列中，并测得$1/e$寿命为$9.5(7)\\,\mathrm{s}$。这些结果表明，双区域架构为在真空内纳米光纤腔附近进行单原子镊子操作提供了足够的${}^{171}\mathrm{Yb}$原子。

英文摘要

We present a dual-region experimental apparatus for trapping single atoms of the fermionic isotope ytterbium-171 (${}^{171}\mathrm{Yb}$) with optical tweezers in a science chamber containing an in-vacuum nanofiber cavity. A source region is located approximately $240\,\mathrm{mm}$ from the science chamber, preserving optical access around the chamber for high-numerical-aperture tweezer optics. A pulsed transport sequence based on longitudinal moving molasses launches atomic pulses toward the science chamber, where they are decelerated and recaptured in a magneto-optical trap. We subsequently load single atoms into a $2\times2$ tweezer array located approximately $50\,\mathrm{μm}$ from the nanofiber and measure a $1/e$ lifetime of $9.5(7)\,\mathrm{s}$. These results demonstrate that the dual-region architecture provides sufficient ${}^{171}\mathrm{Yb}$ atoms for single-atom tweezer operation near an in-vacuum nanofiber cavity.

发表机构

• Nanofiber Quantum Technologies, Inc.（纳米光纤量子技术公司）
• Department of Applied Physics, Waseda University（早稻田大学应用物理系）
• RIKEN Center for Quantum Computing (RQC), RIKEN（理化学研究所量子计算中心）

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