Nippon Telegraph and Telephone Corporation

Riken Corporation

Hiromitsu Imai

Hidetoshi Katori

Masao Takamoto

Katsuya Oguri

Hideki Gotoh

Atsushi Ishizawa

Tomoyo Akatsuka

Tomoya Akatsuka

A magneto-optical trap method including applying a magnetic field to an atom encapsulated in a vacuum vessel and having a nuclear spin of not less than 3/2 by using an anti-Helmholtz coil. Then generating a laser beam including 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′=F−1 in the excited state.

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

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.

Growing community of inventors

Tokyo, Japan

Hiromitsu Imai