126 citations · 505 across the 18 of their papers we have counts for
18 papers
Measurement Quantum Cellular Automata and Anomalies in Floquet Codes
David Aasen, Jeongwan Haah, Zhi Li +1
We investigate the evolution of quantum information under Pauli measurement circuits. We focus on the case of one- and two-dimensional systems, which are relevant to the recently i…
Entanglement Dynamics of Noisy Random Circuits
Zhi Li, Shengqi Sang, Timothy H. Hsieh
The process by which open quantum systems thermalize with an environment is both of fundamental interest and relevant to noisy quantum devices. As a minimal model of this process,…
Link between \emph{Zitterbewegung} and topological phase transition
Xin Shen, Yan-Qing Zhu, Zhi Li
Topological quantum state described by the global invariant has been extensively studied in theory and experiment. In this letter, we investigate the relationship between \emph{Zit…
Entanglement renormalization of thermofield double states
Cheng-Ju Lin, Zhi Li, Timothy H. Hsieh
Entanglement renormalization is a method for coarse-graining a quantum state in real space, with the multi-scale entanglement renormalization ansatz (MERA) as a notable example. We…
Quantum phase transition in a non-Hermitian XY spin chain with global complex transverse field
Yu-Guo Liu, Lu Xu, Zhi Li
In this work, we investigate the quantum phase transition in a non-Hermitian XY spin chain. The phase diagram shows that the critical points of Ising phase transition expand into a…
Tensor monopoles and negative magnetoresistance effect in optical lattices
Hai-Tao Ding, Yan-Qing Zhu, Zhi Li +1
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 i…
Statistically related many-body localization in the one-dimensional anyon Hubbard model
Guo-Qing Zhang, Dan-Wei Zhang, Zhi Li +2
Many-body localization (MBL) has been widely investigated for both fermions and bosons, it is, however, much less explored for anyons. Here we numerically calculate several physica…
Nonlinear Bloch-Zener oscillations for Bose-Einstein condensates in a Lieb optical lattice
Peng He, Zhi Li
We investigate Bloch-Zener oscillations and mean-field Bloch bands of a Bose-Einstein condensate (BEC) in a Lieb optical lattice. We find that the atomic interaction will break the…
Skin superfluid, topological Mott insulators, and asymmetric dynamics in interacting non-Hermitian Aubry-Andre-Harper models
Dan-Wei Zhang, Yu-Lian Chen, Guo-Qing Zhang +3
Non-Hermitian quantum many-body systems are a fascinating subject to be explored. Using the generalized density matrix renormalisation group method and complementary exact diagonal…
Hamiltonian Tomography via Quantum Quench
Zhi Li, Liujun Zou, Timothy H. Hsieh
We show that it is possible to uniquely reconstruct a generic many-body local Hamiltonian from a single pair of initial and final states related by time evolution with the Hamilton…
Topological classification of non-Hermitian bands
Zhi Li, Roger S. K. Mong
We proposed a framework for the topological classification of non-Hermitian systems. Different from previous -theoretical approaches, our approach is a homotopy classification,…
Finite-temperature topological entanglement entropy for CSS codes
Zhi Li, Roger S. K. Mong
We consider topological entanglement entropy (TEE) at finite temperature for CSS codes, which include some ordinary topological-ordered systems such as the toric code and some frac…
Landau-Zener-Stückelberg Interferometry in -symmetric Non-Hermitian models
Xin Shen, Fudong Wang, Zhi Li +1
We systematically investigate the non-Hermitian generalisations of the Landau-Zener (LZ) transition and the Landau-Zener-Stückelberg (LZS) interferometry. The LZ transition probabi…
Local formula for the invariant of topological insulators
Zhi Li, Roger S. K. Mong
We proposed a formula for the invariant for topological insulators, which remains valid without translational invariance. Our formula is a local expression, in the sense that…
Topological metal bands with double-triple-point fermions in optical lattices
Xue-Ying Mai, Yan-Qing Zhu, Zhi Li +2
Novel fermionic quasiparticles with integer pseudospins in some energy bands, such as pseudospin-1 triple-point fermions, recently attract increasing interest since they are beyond…
Exploring topological double-Weyl semimetals with cold atoms in optical lattices
Xue-Ying Mai, Dan-Wei Zhang, Zhi Li +1
We explore the topological properties of double-Weyl semimetals with cold atoms in optical lattices. We first propose to realize a tight-binding model of simulating the double-Weyl…
Entanglement renormalization for chiral topological phases
Zhi Li, Roger S. K. Mong
We considered the question of applying the multiscale entanglement renormalization ansatz (MERA) to describe chiral topological phases. We defined a functional for each layer in th…
Dynamics of Weyl quasiparticles emerged in an optical lattice
Zhi Li, Huai-Qiang Wang, Dan-Wei Zhang +2
We investigate the dynamics of the Weyl quasiparticles emerged in an optical lattice where the topological Weyl semimental and trivial band insulator phases can be adjusted with th…