Knoll Laura T, Magnoni Agustina G, Larotonda Miguel A
CITEDEF & UNIDEF-CONICET, J.B. de La Salle 4397, Villa Martelli, Buenos Aires 1603, Argentina.
Departamento de Física, FCEyN, UBA, Ciudad Universitaria, Buenos Aires 1428, Argentina.
Entropy (Basel). 2025 Jul 1;27(7):712. doi: 10.3390/e27070712.
Photonic quantum metrology has emerged as a leading platform for quantum-enhanced precision measurements. By taking advantage of quantum resources such as entanglement, quantum metrology enables parameter estimation with sensitivities surpassing classical limits. In this review, we describe the basic tools and recent experimental progress in the determination of an optical phase with a precision that may exceed the shot-noise limit, enabled by the use of nonclassical states of light. We review the state of the art and discuss the challenges and trends in the field.
光子量子计量学已成为量子增强精密测量的领先平台。通过利用诸如纠缠等量子资源，量子计量学能够实现超越经典极限灵敏度的参数估计。在本综述中，我们描述了利用光的非经典态以可能超过散粒噪声极限的精度确定光学相位的基本工具和近期实验进展。我们回顾了该领域的现状，并讨论了面临的挑战和发展趋势。
