Bio
Chao Yin is a Q-FARM Bloch Fellow at Stanford University. He earned his B.Sc. in Physics from Peking University (2016–2020), and completed his Ph.D. in Physics at University of Colorado Boulder (2020–2025) under the supervision of Prof. Andrew Lucas. His research interests include quantum information, condensed matter theory, and mathematical physics.
Professional Education
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Doctor of Philosophy, University of Colorado Boulder, Physics (2025)
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Bachelor of Science, Peking University, Physics (2020)
All Publications
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Robust Symmetry Breaking in Gapless Quantum Magnets.
Physical review letters
2026; 137 (7): 070405
Abstract
We prove the existence of spontaneous symmetry breaking in suitably low-energy eigenstates of certain gapless and frustrated many-body quantum systems, namely symmetric quantum perturbations to classical models that exhibit spontaneous symmetry breaking of a finite group at some positive temperature. Additionally, the classical model need not be local in space, as long as it satisfies a quantum analog of the Peierls condition. As an example of our technique, we establish robust ferromagnetism in random-bond Ising models in d=2 dimensions with sufficiently biased random couplings, with weak transverse field. Our mathematical technique is based on establishing quantum bottlenecks, similar to a "many-body Wentzel-Kramers-Brillouin" method for evaluating tunneling rates. Using these same methods, we provide new proofs of metastability and the slow decay of the false vacuum, applicable to gapless metastable states. Our Letter represents a first step toward a rigorous classification of stable gapless quantum phases.
View details for DOI 10.1103/5ntb-ggcz
View details for PubMedID 42675414
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Quantum Routing and Entanglement Dynamics Through Bottlenecks
PRX QUANTUM
2026; 7 (1)
View details for DOI 10.1103/7b1x-hjcy
View details for Web of Science ID 001691028100002
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Lieb-Robinson Bounds with Exponential-in-Volume Tails
PRX QUANTUM
2025; 6 (4)
View details for DOI 10.1103/n242-m1l2
View details for Web of Science ID 001617877500001
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A Polynomial-Time Classical Algorithm for Noisy Quantum Circuits
PHYSICAL REVIEW X
2025; 15 (4)
View details for DOI 10.1103/xct1-7kf2
View details for Web of Science ID 001633096200002
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Low-Density Parity-Check Codes as Stable Phases of Quantum Matter
PRX QUANTUM
2025; 6 (3)
View details for DOI 10.1103/361k-nj4b
View details for Web of Science ID 001553821400002
https://orcid.org/0000-0003-3379-310X