2010 Fiscal Year Final Research Report

Eliminating inhomogeneity from an optical lattice potential using interaction between atoms in a mixture of quantum degenerate gases

Research Project

Project/Area Number	21684022
Research Category	Grant-in-Aid for Young Scientists (A)
Allocation Type	Single-year Grants
Research Field	Atomic/Molecular/Quantum electronics
Research Institution	The University of Tokyo
Principal Investigator	INOUYE Shin 東京大学, 大学院・工学系研究科, 准教授 (10401150)
Project Period (FY)	2009 – 2010
Keywords	量子エレクトロニクス
Research Abstract	We succeeded in producing a dual Bose-Einstein Condensate made of rubidium-87 atoms and potassium-41 atoms in an optical dipole trap. In order to have ample optical power for lattice potential, we developed a single frequency diode-pumped solid state (DPSS) laser at 1064nm. Furthermore, by using an optical trap whose wavelength at 809nm, we successfully canceled the gravitational sag difference caused by mass difference between rubidium and potassium atoms. By using interspecies Feshbach resonance, we realized miscible and immiscible mixture of Bose-Einstein Condensates.