Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Ding Hai-tao"'
Publikováno v:
Phys. Rev. A 110. 052203 (2024)
The geometric properties of quantum states is fully encoded by the quantum geometric tensor. The real and imaginary parts of the quantum geometric tensor are the quantum metric and Berry curvature, which characterize the distance and phase difference
Externí odkaz:
http://arxiv.org/abs/2404.15628
The concepts of topology and geometry are of critical importance in exploring exotic phases of quantum matter. Though they have been investigated on various experimental platforms, to date a direct probe of topological and geometric properties on a u
Externí odkaz:
http://arxiv.org/abs/2403.14249
In this paper, we present a novel experimental approach for simulating and detecting topological invariants using ultracold fermions confined in two-dimensional hexagonal optical lattices. We propose achieving two-fold degenerate four-band models wit
Externí odkaz:
http://arxiv.org/abs/2403.06565
Publikováno v:
Phys. Rev. A 109, 053314(2024)
We propose a feasible scheme to realize a four-band Stiefel-Whitney insultor (SWI) with spin-orbit coupled ultracold atoms in an optical Raman lattice. Four selected spin states are coupled by carefully designed Raman lasers, to generate the desired
Externí odkaz:
http://arxiv.org/abs/2402.02777
Autor:
Ding, Hai-Tao, Zhang, Chang-Xiao, Liu, Jing-Xin, Wang, Jian-Te, Zhang, Dan-Wei, Zhu, Shi-Liang
Publikováno v:
Phys. Rev. A 109, 043305 (2024)
The quantum geometric tensor (QGT) characterizes the complete geometric properties of quantum states, with the symmetric part being the quantum metric, and the antisymmetric part being the Berry curvature. We propose a generic Hamiltonian with global
Externí odkaz:
http://arxiv.org/abs/2312.01086
Autor:
Ding, Hai-Tao, Zhu, Yan-Qing, He, Peng, Liu, Yu-Guo, Wang, Jian-Te, Zhang, Dan-Wei, Zhu, Shi-Liang
Publikováno v:
Phys. Rev. A 105, 012210 (2022)
The complete geometry of quantum states in parameter space is characterized by the quantum geometric tensor, which contains the quantum metric and Berry curvature as the real and imaginary parts, respectively. When the quantum states are degenerate,
Externí odkaz:
http://arxiv.org/abs/2201.01086
Autor:
Wang, Ning, Zhang, Nan, Sun, Mei-Ling, Sun, Yan, Dong, Qing-Yu, Wang, Yu, Gu, Zeng-Tian, Ding, Hai-Tao, Qin, Qi-Long, Jiang, Yong, Chen, Xiu-Lan, Zhang, Yu-Zhong, Gao, Chao, Li, Chun-Yang
Publikováno v:
In Journal of Hazardous Materials 5 September 2024 476
Publikováno v:
Phys. Rev. A 103, 043329 (2021)
We propose an ultracold-atom setting where a fermionic superfluidity with attractive s-wave interaction is uploaded in a non-Hermitian Lieb optical lattice. The existence of a real-energy flat band solution is revealed. We show that the interplay bet
Externí odkaz:
http://arxiv.org/abs/2101.00985
Publikováno v:
Phys. Rev. A 102,53325 (2020)
We propose that a kind of four-dimensional (4D) Hamiltonians, which host tensor monopoles related to quantum metric tensor in even dimensions, can be simulated by ultracold atoms in the optical lattices. The topological properties and bulk-boundary c
Externí odkaz:
http://arxiv.org/abs/2007.02093
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