Zhihui Zhu

Quantum State Tomography for Matrix Product Density Operators

2023 · arXiv (Cornell University)

The reconstruction of quantum states from experimental measurements, often achieved using quantum state tomography (QST), is crucial for the verification and benchmarking of quantum devices. However, performing QST for a generic unstructured quantum state requires …

From Emergence to Control: Probing and Modulating Self-Reflection in Language Models

2025 · arXiv (Cornell University)

Self-reflection -- the ability of a large language model (LLM) to revisit, evaluate, and revise its own reasoning -- has recently emerged as a powerful behavior enabled by reinforcement learning with verifiable rewards (RLVR). While …