Observation of the spatial distribution of gravitationally bound quantum states of ultracold neutrons and its derivation using the Wigner function

G. Ichikawa, S. Komamiya, Y. Kamiya, Y. Minami, M. Tani, P. Geltenbort, K. Yamamura, M. Nagano, T. Sanuki, S. Kawasaki, M. Hino, M. Kitaguchi

研究成果: Article査読

24 被引用数 (Scopus)

抄録

Ultracold neutrons (UCNs) can be bound by the potential of terrestrial gravity and a reflecting mirror. The wave function of the bound state has characteristic modulations. We carried out an experiment to observe the vertical distribution of the UCNs above such a mirror at the Institut Laue-Langevin in 2011. The observed modulation is in good agreement with that prediction by quantum mechanics using the Wigner function. The spatial resolution of the detector system is estimated to be 0.7 μm. This is the first observation of gravitationally bound states of UCNs with submicron spatial resolution.

本文言語English
論文番号071101
ジャーナルPhysical Review Letters
112
7
DOI
出版ステータスPublished - 2014 2 19
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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