Ultracold ytterbium atoms: from quantum simulation of Hubbard model to new physics search (MCQST-Colloquium) (Prof. Yoshiro Takahashi)
- Datum: 30.05.2023
- Uhrzeit: 14:30
- Vortragende(r): Prof. Yoshiro Takahash
- Kyoto University, Japan
- Ort: Max Planck Institute of Quantum Optics
- Raum: Herbert Walther Lecture Hall
First, I will present our study of an SU(N=6) Fermi-Hubbard model by working with 173Yb. The detailed comparison between theory and experiment allows us to realize a lowest temperature of cold-atom Fermi-Hubbard model . More recently, we have studied the quantum magnetism in an open dissipative SU(6) Fermi-Hubbard system, reveling the dynamical change of the spin correlations from antiferrimagntic to ferromagnetic ones . I will also report our recent efforts in the precision measurement, including the measruement of isotope shifts with the part-per-billion precision, allowing us to obtain a bound of the coupling of a new hypothetical particle beyond Standard Model  and the observation of a new clock transition which is highly senstive to physics beyond the Standard Model .
 S. Taie, et al., “Observation of antiferromagnetic correlations in an ultracold SU(N) Hubbard model”, Nat. Phys. 18, 1356, (2022).
 K. Honda, et al., “Observation of the Sign Reversal of the Magnetic Correlation in a Driven-Dissipative Fermi-Hubbard System”, Phys. Rev. Lett. 130, 063001(2023).
 K. Ono, et al., “Observation of Nonlinearity of Generalized King plot in the Search for New Boson”, Phys. Rev. X 12, 021033 (2022).
 T. Ishiyama, et al., “Observation of an Inner-Shell Orbital Clock Transition in Neutral Ytterbium Atoms”, Phys. Rev. Lett., 130, 153402 (2023).