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International Conference on Electron Devices and Applications (ICEDA)

Parameter Estimation Via Single-Photon Detection in A Quantum V-Type Three-Level System

Zhenghao Zhang

Published Dec 19, 2025• 0 citations
Publisher

Abstract

We investigate parameter estimation in a Vconfiguration three-level atomic system continuously monitored via photon counting. By unraveling the system's dynamics into individual quantum trajectories, we demonstrate how time-resolved fluorescence records can be processed using maximum likelihood estimation (MLE) to extract key system parameters such as spontaneous decay rates and Rabi frequencies. We analyze the role of waiting-time distributions, likelihood reconstruction, and finite detector efficiencies, showing that trajectory-based MLE achieves the Cramér–Rao bound in the asymptotic limit. Our results highlight the potential of quantum-jump–resolved statistics to enable precision parameter estimation in open quantum systems.

DOI
10.1109/iceda68428.2025.11377164

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