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Observation of Chiral-Mode Domains in a Frustrated XY Model on Optical Triangular Lattices
Hideki Ozawa, Ryuta Yamamoto, Takeshi Fukuhara
We investigated the relaxation and excitation in a frustrated XY model realized by a Bose gas in Floquet-engineered optical triangular lattices. Periodically driving the position o…
Single-site-resolved imaging of ultracold atoms in a triangular optical lattice
Ryuta Yamamoto, Hideki Ozawa, David C. Nak +2
We demonstrate single-site-resolved fluorescence imaging of ultracold atoms in a triangular optical lattice by employing Raman sideband cooling. Combining a Rama…
Antiferromagnetic spin correlation of SU() Fermi gas in an optical super-lattice
Hideki Ozawa, Shintaro Taie, Yosuke Takasu +1
Large-spin cold atomic systems can exhibit unique phenomena that do not appear in spin-1/2 systems. We report the observation of nearest-neighbor antiferromagnetic spin correlation…
Spatial Adiabatic Passage of Massive Quantum Particles
Shintaro Taie, Tomohiro Ichinose, Hideki Ozawa +1
By adiabatically manipulating tunneling amplitudes of cold atoms in a periodic potential with a multiple sublattice structure, we are able to coherently transfer atoms from a subla…
Topological Thouless Pumping of Ultracold Fermions
Shuta Nakajima, Takafumi Tomita, Shintaro Taie +5
A gas of electrons in a one-dimensional periodic potential can be transported even in the absence of a voltage bias if the potential is modulated slowly and periodically in time. R…
Coherent driving and freezing of bosonic matter wave in an optical Lieb lattice
Shintaro Taie, Hideki Ozawa, Tomohiro Ichinose +3
While kinetic energy of a massive particle generally has quadratic dependence on its momentum, a flat, dispersionless energy band is realized in crystals with specific lattice stru…