GHZ state, spin squeezed state, and spin coherent state for frequency estimation under general Gaussian noises

• Published in: Communications in theoretical physics Vol. 77; no. 6; pp. 65106 - 65115
• Main Authors: Chai, Qi, Yang, Wen
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.06.2025
• Subjects: cat state; quantum sensing; spin coherent state; spin squeezed state

Exploring the quantum advantages of various non-classical quantum states in noisy environments is a central subject in quantum sensing. Here we provide a complete picture for the frequency estimation precision of three important states (the Greenberger–Horne–Zeilinger (GHZ) state, the maximal spin s...