Development of an optical lattice magnetometer for high-sensitivity magnetic-field detection

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K17676
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Tohoku University
• Principal Investigator: Harada Ken-ichi 東北大学, サイクロトロン・ラジオアイソトープセンター, 講師 (00515447)
• Research Collaborator: SAKEMI Yasuhiro 東京大学, 原子核科学研究センター, 教授 ; INOUE Takeshi 東北大学, 学際科学フロンティア研究所, 助教 ; UCHIYAMA Aiko 東北大学, 大学院・理学研究科
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 光格子 / 光学磁力計

Outline of Final Research Achievements

We developed a magnetometer with high sensitivity and high spatial resolution by using alkali atoms trapped in an optical lattice. By trapping rubidium (Rb) atoms in magneto-optical trap and improving the temperature of cold atom clouds by polarization gradient cooling, we succeeded in trapping Rb atoms in the optical lattice. Moreover, we constructed an experimental system of nonlinear magneto-optical rotation for measuring a magnetic field by developing a laser light source and frequency stabilization system. We established several techniques required to realize the optical lattice magnetometer.

Free Research Field

量子エレクトロニクス、素粒子・原子核