Parameter estimation in n-dimensional massless scalar field
Ying 颖 Yang 杨,
Jiliang 继良 Jing 荆
Abstract:Quantum Fisher information(QFI) associated with local metrology has been used to parameter estimation in open quantum systems. In this work, we calculated the QFI for a moving Unruh-DeWitt detector coupled with massless scalar fields in $n$-dimensional spacetime, and analyzed the behavior of QFI with various parameters, such as the dimension of spacetime, evolution time, and Unruh temperature. We discovered that the QFI of state parameter decreases monotonically from $1$ to $0$ over time. Additionally, we note… Show more
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