Shunyu Yao

All Publications

• Subleading Weingartens JOURNAL OF HIGH ENERGY PHYSICS Stanford, D., Yang, Z., Yao, S. 2022

  View details for DOI 10.1007/JHEP02(2022)200

  View details for Web of Science ID 000761390100001

• Wormholes without averaging Saad, P., Shenker, S., Stanford, D., Yao, S. Arxiv Preprint 2103.16754. 2021
• Comments on wormholes and factorization Saad, P., Shenker, S., Yao, S. Arxiv Preprint 2107.13130. 2021
• Non-Hermitian Topological Invariants in Real Space PHYSICAL REVIEW LETTERS Song, F., Yao, S., Wang, Z. 2019; 123 (24)

  View details for DOI 10.1103/PhysRevLett.123.246801

  View details for Web of Science ID 000501493200007

• Non-Hermitian Skin Effect and Chiral Damping in Open Quantum Systems PHYSICAL REVIEW LETTERS Song, F., Yao, S., Wang, Z. 2019; 123 (17)

  View details for DOI 10.1103/PhysRevLett.123.170401

  View details for Web of Science ID 000491265000001

• Non-Hermitian Chern Bands PHYSICAL REVIEW LETTERS Yao, S., Song, F., Wang, Z. 2018; 121 (13): 136802

  Abstract

  The relation between chiral edge modes and bulk Chern numbers of quantum Hall insulators is a paradigmatic example of bulk-boundary correspondence. We show that the chiral edge modes are not strictly tied to the Chern numbers defined by a non-Hermitian Bloch Hamiltonian. This breakdown of conventional bulk-boundary correspondence stems from the non-Bloch-wave behavior of eigenstates (non-Hermitian skin effect), which generates pronounced deviations of phase diagrams from the Bloch theory. We introduce non-Bloch Chern numbers that faithfully predict the numbers of chiral edge modes. The theory is backed up by the open-boundary energy spectra, dynamics, and phase diagram of representative lattice models. Our results highlight a unique feature of non-Hermitian bands and suggest a non-Bloch framework to characterize their topology.

  View details for DOI 10.1103/PhysRevLett.121.136802

  View details for Web of Science ID 000445515500010

  View details for PubMedID 30312068

• Edge States and Topological Invariants of Non-Hermitian Systems PHYSICAL REVIEW LETTERS Yao, S., Wang, Z. 2018; 121 (8): 086803

  Abstract

  The bulk-boundary correspondence is among the central issues of non-Hermitian topological states. We show that a previously overlooked "non-Hermitian skin effect" necessitates redefinition of topological invariants in a generalized Brillouin zone. The resultant phase diagrams dramatically differ from the usual Bloch theory. Specifically, we obtain the phase diagram of the non-Hermitian Su-Schrieffer-Heeger model, whose topological zero modes are determined by the non-Bloch winding number instead of the Bloch-Hamiltonian-based topological number. Our work settles the issue of the breakdown of conventional bulk-boundary correspondence and introduces the non-Bloch bulk-boundary correspondence.

  View details for DOI 10.1103/PhysRevLett.121.086803

  View details for Web of Science ID 000442348000009

  View details for PubMedID 30192628

• Topological invariants of Floquet systems: General formulation, special properties, and Floquet topological defects PHYSICAL REVIEW B Yao, S., Yan, Z., Wang, Z. 2017; 96 (19)

  View details for DOI 10.1103/PhysRevB.96.195303

  View details for Web of Science ID 000414846700001