English

On stability of continuous-time quantum-filters

Optimization and Control 2011-08-09 v2 Systems and Control Quantum Physics

Abstract

We prove that the fidelity between the quantum state governed by a continuous time stochastic master equation driven by a Wiener process and its associated quantum-filter state is a sub-martingale. This result is a generalization to non-pure quantum states where fidelity does not coincide in general with a simple Frobenius inner product. This result implies the stability of such filtering process but does not necessarily ensure the asymptotic convergence of such quantum-filters.

Cite

@article{arxiv.1103.2706,
  title  = {On stability of continuous-time quantum-filters},
  author = {Hadis Amini and Mazyar Mirrahimi and Pierre Rouchon},
  journal= {arXiv preprint arXiv:1103.2706},
  year   = {2011}
}
R2 v1 2026-06-21T17:39:15.698Z