Adaptive Stabilizer State Fidelity Certification

May 28, 2026·
Kun WANG
Kun WANG
· 0 min read
Abstract
We extend stabilizer-state fidelity certification from one fixed generator gauge to an adaptive protocol that reports the full certified fidelity interval. Each round solves exact endpoint linear programs and chooses a gauge through witness elimination. The interval tightens monotonically and becomes exact once all nontrivial stabilizers are covered. For structured syndrome distributions, adaptivity can converge faster than this worst-case exponential benchmark.
Type
Publication
arXiv preprint arXiv:2605.29820
publication research
Fidelity Certification Stabilizer States Adaptive Measurements
Kun WANG
Authors
Kun WANG
Associate Researcher

I am an Associate Researcher and Outstanding Young Talent in the College of Computer Science and Technology, National University of Defense Technology (NUDT).

My research develops practical foundations for reliable and scalable quantum information processing. I work across photonic quantum computing, quantum characterization, verification and validation, distributed quantum estimation, and quantum information theory.

Before joining NUDT, I was a Senior Researcher at the Institute for Quantum Computing, Baidu Research, from 2020 to 2023. I led the development of the Quantum Error Processing (QEP) toolkit for characterizing, mitigating, and correcting errors in quantum devices through software. I received the Shenzhen Industrial Development and Innovation Talent Award in 2023.

Previously, I was a postdoc at the Shenzhen Institute for Quantum Science and Engineering (SIQSE), Southern University of Science and Technology, where I worked with Prof. Masahito Hayashi.