4 papers
Box model of quantum annealing
Yang Wei Koh, Youjin Deng
A particle-in-a-box model of continuous space quantum annealing is proposed and studied numerically by solving the Schrödinger wave equation directly. Three types of energy landsca…
Double-exchange ferromagnetism of fermionic atoms in a -orbital hexagonal lattice
Haoran Sun, Erhai Zhao, Youjin Deng +1
A large class of correlated quantum materials feature strong Hund's coupling. Yet cold-atom quantum simulators have so far focused primarily on single-orbital Fermi-Hubbard systems…
Observation of counterflow superfluidity in a two-component Mott insulator
Yong-Guang Zheng, An Luo, Ying-Chao Shen +8
The counterflow superfluidity (CSF) was predicted two decades ago. Counterintuitively, while both components in the CSF have fluidity, their correlated counterflow currents cancel…
Observation of the antiferromagnetic phase transition in the fermionic Hubbard model
Hou-Ji Shao, Yu-Xuan Wang, De-Zhi Zhu +9
The fermionic Hubbard model (FHM)[1], despite its simple form, captures essential features of strongly correlated electron physics. Ultracold fermions in optical lattices[2, 3] pro…