Entanglement-Enhanced Quantum Strategies for Accurate Estimation of Multibody Group Motion and Moving Object Characteristics

TL;DR

This paper introduces a quantum entanglement-based method for simultaneously estimating multiple physical parameters of multibody systems and moving objects, demonstrating superior accuracy over classical strategies.

Contribution

The study develops a novel quantum strategy utilizing entangled photons for multi-parameter estimation, enhancing measurement precision of position, velocity, and size of moving objects.

Findings

Quantum approach outperforms classical methods in accuracy

High entanglement degree improves measurement precision

Effective for simultaneous estimation of multiple parameters

Abstract

This study presents a quantum strategy for simultaneous estimation of two physical quantities using different entanglement resources. We explore the utilization of positively or negatively timecorrelated photons. The proposed method enables the detection of central position and relative velocity of multibody systems, as well as precise measurement of size and velocity of moving objects. Comparative analysis with other strategies reveals the superior quantum advantage of our approach, particularly when appropriate entanglement sources with high entanglement degree are employed. These findings contribute to advancing our understanding of quantum strategies for accurate measurements.