English

Verifying a stabilizer state with few observables but many shots

Quantum Physics 2025-07-21 v2

Abstract

We propose a quantum-state-certification protocol for stabilizer states, motivated by application in in-situ testing of NISQ-era quantum computer systems: The number of qubits is bounded, and in terms of cost of running the protocol, identical repetition of quantum circuits contribute negligibly compared to switching the measurement bases. The method builds on Direct Fidelity Estimation and work by Somma et al.~(2006), but replaces linear averages by a minimum over estimates of expectation values. We provide mathematically rigorous analysis of the false-negative and false-positive rates.

Keywords

Cite

@article{arxiv.2412.16690,
  title  = {Verifying a stabilizer state with few observables but many shots},
  author = {Dirk Oliver Theis},
  journal= {arXiv preprint arXiv:2412.16690},
  year   = {2025}
}

Comments

This is an extended abstract, the full paper is available

R2 v1 2026-06-28T20:45:06.360Z