Study of a mixture of ultracold alkali and Sr atom in a hybrid optical trap

2016 Fiscal Year Final Research Report

• Project/Area Number: 25287100
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: The University of Tokyo
• Principal Investigator: AOKI Takatoshi 東京大学, 総合文化研究科, 助教 (30328562)
• Co-Investigator(Kenkyū-buntansha): 梶田 雅稔 国立研究開発法人情報通信研究機構, 新世代ネットワーク研究センター, 主任研究員 (50359030)
• Co-Investigator(Renkei-kenkyūsha): GEETHA Gopakumar 首都大学東京, 理工学研究科, 研究員 (70649384) ; ABE Minori 首都大学東京, 理工学研究科, 助教 (60534485)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: レーザー冷却 / 精密分光 / 光トラップ / 冷却分子 / 基本対称性

Outline of Final Research Achievements

We have investigated the alkali atoms and Sr atoms in a hybrid-optical dipole-trap. For optical trapping, we have developed laser sources for 689 nm laser cooling, and have succeeded in a magneto-optical trapping of Sr using cooling lights with a wavelength of 689 nm. Moreover, we have succeeded in increasing the laser intensities and a spectroscopy of meta stable state in Sr.
We have studied a method to measure a nuclear anapole moment using alkali atoms in an optical-dipole trap, and to cancel a magnetic fluctuation. Furthermore, we have studied light shifts induced by parity nonconservation effect in an optical-dipole trap. Our results enable us to measure the light shifts in TeV scale.
We have investigated a method to suppress effects in 10 to -17 level using rotational and vibrational transitions in ultracold CaH, N2+, and O2+ molecules.

Free Research Field

量子エレクトロニクス