Tilt Measurement at the Quantum Cramer–Rao Bound Using a Higher-Order Hermite–Gaussian Mode

Tilt Measurement at the Quantum Cramer–Rao Bound Using a Higher-Order Hermite–Gaussian Mode

The quantum Cramer–Rao bound (QCRB) provides an ultimate precision limit in parameter estimation. The sensitivity of spatial measurements can be improved by using the higher-order Hermite–Gaussian mode. However, to date, the QCRB-saturating tilt measurement has not been realized. Here, we experiment...

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Bibliographic Details
Main Authors: Zhi Li, Yijian Wang, Hengxin Sun, Kui Liu, Jiangrui Gao
Format: Article
Language:English
Published: MDPI AG 2023-05-01
Series:Photonics
Subjects:
high-order Hermite–Gaussian mode
tilt measurement
quantum Cramer–Rao bound
homodyne detection
Online Access:https://www.mdpi.com/2304-6732/10/5/584

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