2 citations · 4 across the 6 of their papers we have counts for
6 papers
Measuring unconventional causal structures in monitored dynamics
Hong-Yi Wang, Haifeng Tang, Xiao-Liang Qi
Causality underpins all logical reasoning. However, the causal structure in quantum processes can be far from intuitive, often differing from its classical counterpart in relativit…
Measurement induced scrambling and emergent symmetries in random circuits
Haifeng Tang, Hong-Yi Wang, Zhong Wang +1
Quantum entanglement is affected by unitary evolution, which spreads the entanglement through the whole system, and also by measurements, which usually tends to disentangle subsyst…
Estimating time in quantum chaotic systems and black holes
Haifeng Tang, Shreya Vardhan, Jinzhao Wang
We characterize new universal features of the dynamics of chaotic quantum many-body systems, by considering a hypothetical task of "time estimation." Most macroscopic observables i…
Brownian Gaussian Unitary Ensemble: non-equilibrium dynamics, efficient -design and application in classical shadow tomography
Haifeng Tang
We construct and extensively study a Brownian generalization of the Gaussian Unitary Ensemble (BGUE). Our analysis begins with the non-equilibrium dynamics of BGUE, where we derive…
Entanglement entropy in type II von Neumann algebra: examples in Double-Scaled SYK
Haifeng Tang
An intriguing feature of type II von Neumann algebra is that the entropy of the mixed states is negative. Although the type classification of von Neumann algebra and its conseq…
Operator Krylov complexity in random matrix theory
Haifeng Tang
Krylov complexity, as a novel measure of operator complexity under Heisenberg evolution, exhibits many interesting universal behaviors and also bounds many other complexity measure…