Critical quantum metrology, utilizing quantum critical systems for parameter estimation, is gaining traction. This paper proposes an adiabatic scheme on a perturbed Ising spin model with a first-order QPT, experimentally implemented using nuclear magnetic resonance. At the critical point, precision achieves Heisenberg scaling (1/T). The scheme's advantages include ease of implementation, robustness against decay, and tunable energy gap.
Publisher
npj Quantum Information
Published On
Dec 13, 2021
Authors
Ran Liu, Yu Chen, Min Jiang, Xiaodong Yang, Ze Wu, Yuchen Li, Haidong Yuan, Xinhua Peng, Jiangfeng Du
Tags
quantum metrology
quantum phase transitions
adiabatic scheme
Ising spin model
Heisenberg scaling
nuclear magnetic resonance
parameter estimation
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