Optical magnetic resonance imaging with an ultra-narrow optical transition
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We demonstrate optical magnetic resonance imaging (OMRI) of a Bose–Einstein condensate of ytterbium atoms trapped in a one-dimensional (1D) optical lattice using an ultra-narrow optical transition 1S0↔3P2 (m=−2). We developed a vacuum chamber equipped with a thin glass cell, which provides high optical access and allows a compact design of magnetic coils. A line shape of a measured spectrum of the OMRI is well described by a spatial distribution of the atoms in a 1D optical lattice with the Thomas–Fermi approximation and an applied magnetic field gradient. The observed spectrum exhibits a periodic structure corresponding to the optical lattice periodicity.
KeywordsOptical Lattice Magnetic Field Gradient Bias Magnetic Field Trap Frequency 174Yb Atom
We acknowledge S. Uetake, H. Kakiuchi, S. Khono, N. Hamaguchi, and H. Kurkjian for their experimental assistance. This work was supported by a Grant-in-Aid for Scientific Research of JSPS (Nos. 18204035, 21102005C01 (Quantum Cybernetics), 21104513A03 (DYCE), and 22684022), the GCOE Program ‘The Next Generation of Physics, Spun from Universality and Emergence’ from MEXT of Japan, FIRST, and the Matsuo Foundation.