Magnetically trapped $$^{87}$$ 87 Rb atoms have been observed near a single-mode optical nanofibre. Approximately $$1\times 10^6$$ 1 × 10 6 atoms were optically pumped to the $${|{F=2,m_\mathrm{F}=2}\rangle }$$ | F = 2 , m F = 2 ⟩ state and held in the trap with a trap lifetime of up to 2 s. The temperature of the atomic sample within the magnetic trap was measured to be below $$230\,\upmu \hbox {K}$$ 230 μ K . The compact vacuum system and high-temperature fibre feedthroughs are presented, and the feasibility of creating a quantum degenerate gas of ultracold neutral atoms near an optical nanofibre is discussed.

中文翻译：

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光学纳米纤维附近的磁性俘获原子

已在单模光学纳米纤维附近观察到磁性捕获的 $$^{87}$$ 87 Rb 原子。大约 $$1\times 10^6$$ 1 × 10 6 个原子被光学泵送到 $${|{F=2,m_\mathrm{F}=2}\rangle }$$ | F = 2 , m F = 2 ⟩ 状态并保持在陷阱中，陷阱寿命长达 2 秒。测得磁阱内原子样品的温度低于 $$230\,\upmu\hbox {K}$$230 μ K 。介绍了紧凑的真空系统和高温纤维馈通，并讨论了在光学纳米纤维附近产生超冷中性原子量子简并气体的可行性。