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9 papers
Locally Purified Density Operators for Symmetry-Protected Topological Phases in Mixed States
Yuchen Guo, Jian-Hao Zhang, Hao-Ran Zhang +2
We propose a tensor network approach known as the locally purified density operator (LPDO) to investigate the classification and characterization of symmetry-protected topological…
Hourglass-Like Spin Excitation in a Doped Mott Insulator
Jia-Xin Zhang, Chuan Chen, Jian-Hao Zhang +1
We examine the dynamical magnetic response in a two-component resonating-valence-bond (RVB) description of the doped Mott insulator. The half-filled antiferromagnetic phase describ…
Fractonic Higher-Order Topological Phases in Open Quantum Systems
Jian-Hao Zhang, Ke Ding, Shuo Yang +1
In this work, we study the generalization of decohered average symmetry-protected topological phases to open quantum systems with a combination of subsystem symmetries and global s…
Topological Phases with Average Symmetries: the Decohered, the Disordered, and the Intrinsic
Ruochen Ma, Jian-Hao Zhang, Zhen Bi +2
Global symmetries greatly enrich the landscape of topological quantum phases, playing an essential role from topological insulators to fractional quantum Hall effect. Topological p…
Triggering Boundary Phase Transitions through Bulk Measurements in 2D Cluster States
Yuchen Guo, Jian-Hao Zhang, Zhen Bi +1
We investigate the phase diagram at the boundary of an infinite two-dimensional cluster state subject to bulk measurements using tensor network methods. The state is subjected to u…
Tensor network representations of fermionic crystalline topological phases on two-dimensional lattices
Jian-Hao Zhang, Shuo Yang
We investigate the tensor network representations of fermionic crystalline symmetry-protected topological (SPT) phases on two-dimensional lattices. As a mapping from virtual indice…