Xiaoliang Qi

Xiaoliang Qi
Name	Xiaoliang Qi
Birth date	1976
Birth place	Nanjing, Jiangsu, China
Fields	Theoretical physics, Condensed matter physics, Quantum information
Workplaces	Stanford University, University of California, Berkeley, Princeton University
Alma mater	Nanjing University, Tsinghua University, Harvard University
Doctoral advisor	Shoucheng Zhang
Notable students	Jason Alicea, David Hsieh
Known for	Topological phases of matter, Sachdev–Ye–Kitaev model, quantum chaos

Xiaoliang Qi is a Chinese-American theoretical physicist specializing in condensed matter physics and quantum information. He is known for work on topological phases, strongly correlated systems, and the Sachdev–Ye–Kitaev (SYK) model that bridges condensed matter and quantum gravity. Qi holds faculty positions at prominent research universities and has influenced both theory and pedagogy through collaborative work with leading figures in physics.

Early life and education

Qi was born in Nanjing and completed undergraduate studies at Nanjing University before moving to Tsinghua University for graduate coursework. He undertook doctoral research at Harvard University under the supervision of Shoucheng Zhang, engaging with problems at the intersection of condensed matter physics, quantum field theory, and topological insulators. During his formative years he interacted with researchers associated with Princeton University, Stanford University, University of California, Berkeley, and international centers such as the Perimeter Institute.

Academic career and positions

Qi's early postdoctoral appointments included collaborations at Princeton University and research visits to institutions like Microsoft Research and the Kavli Institute for Theoretical Physics. He joined the faculty at Stanford University and later held joint appointments or collaborations with groups at UC Berkeley and Harvard University. Qi has served on advisory panels for funding agencies including the National Science Foundation and participated in conferences organized by American Physical Society and International Centre for Theoretical Physics. He maintains active collaborations with researchers at the Institute for Advanced Study, Max Planck Institute for the Physics of Complex Systems, and several national laboratories.

Research contributions and notable work

Qi made early contributions to the theory of topological insulators and topological superconductors, building on concepts developed by Shoucheng Zhang, Charles Kane, Shoucheng Zhang's contemporaries, and Joel Moore. He worked on topological responses and entanglement properties related to the quantum Hall effect and proposed theoretical frameworks connecting Berry phase physics with edge modes studied by groups including B. Andrei Bernevig and Taylor L. Hughes. Qi is co-originator of influential extensions of the Chern-Simons approach to symmetry-protected phases and has explored connections to conformal field theory and modular invariance.

A major pillar of Qi's recent work concerns the Sachdev–Ye–Kitaev (SYK) model and its implications for quantum chaos, black hole thermodynamics, and the AdS/CFT correspondence. Collaborators include theorists from Princeton University, MIT, Stanford University, and University of California, Berkeley. His papers analyzed spectral statistics, out-of-time-ordered correlators studied by groups around Brian Swingle and Douglas Stanford, and emergent approximate conformal symmetry in disordered interacting models linked to Subir Sachdev and Alexei Kitaev. Qi has also contributed to proposals for realizing SYK-like physics in cold-atom platforms and solid-state architectures, connecting to experimental groups at Harvard University, MIT, and Caltech.

Qi's research spans quantum entanglement measures, quantum quenches, and transport in strongly correlated systems, interfacing with methods from tensor networks, density matrix renormalization group, and field-theoretic approaches championed by researchers at Perimeter Institute and Kavli Institute. He has engaged with interdisciplinary topics tying condensed matter to high-energy theory, including studies on holographic duality and emergent gravity inspired by work from Juan Maldacena and others.

Awards and honors

Qi has received recognition from major scientific organizations, including awards and fellowships affiliated with the American Physical Society and invitations to deliver named lectures at institutions such as Princeton University and Stanford University. He has been named in listings by professional societies and has received research grants from agencies including the National Science Foundation and the Simons Foundation. Qi has participated as an elected member on scientific advisory boards for institutes like the Perimeter Institute and committees convened by the National Institutes of Health for interdisciplinary quantum science initiatives.

Selected publications

- Qi, X., et al., Contributions on topological insulators and topological superconductors published in leading journals with coauthors from Stanford University and UC Berkeley. - Papers on SYK model behavior, quantum chaos, and holographic connections coauthored with researchers at Princeton University and MIT. - Reviews and perspective articles summarizing progress on symmetry-protected topological phases and entanglement, written in collaboration with authors from Harvard University and Caltech. - Technical works on transport and quenches in correlated systems employing tensor-network methodology linked to groups at Perimeter Institute and Kavli Institute.

Teaching and mentorship

Qi has taught graduate and undergraduate courses at institutions including Stanford University and UC Berkeley covering topics in condensed matter theory, quantum mechanics, and quantum information. He has supervised doctoral students and postdoctoral researchers who have gone on to appointments at universities such as MIT, Princeton University, Harvard University, and national laboratories. Qi participates in summer schools and workshop programs organized by International Centre for Theoretical Physics, Perimeter Institute, and Kavli Institute for Theoretical Physics to mentor early-career researchers.

Category:Living people Category:Theoretical physicists Category:Condensed matter physicists