Nippon Telegraph and Telephone Corporation

Riken Corporation

Tomoyo Akatsuka

Hidetoshi Katori

Masao Takamoto

Hideki Gotoh

Katsuya Oguri

Hiromitsu Imai

Atsushi Ishizawa

A magneto-optical trap apparatus includes a vacuum vessel for encapsulating an atom to be trapped, an anti-Helmholtz coil for applying a magnetic field to an inside of the vacuum vessel, a laser device for generating a laser beam, and an irradiation device for irradiating the generated laser beam from a plurality of directions. The laser beam includes a first laser beam detuned from a first resonance frequency when the atom transits from a total angular momentum quantum number F in a ground state to a total angular momentum quantum number F'=F+1 in an excited state, and a second laser beam detuned from a second resonance frequency when the atom transits from the total angular momentum quantum number F in the ground state to a total angular momentum quantum number F&#x2032;=F&#x2212;1 in the excited state, among transitions from J=0 in a ground state to J&#x2032;=1 in an excited state.

Magneto-optical trap method and apparatus using positive and negative g-factors

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Tokyo, Japan

Tomoyo Akatsuka