1. The Department of Physics,Beijing Normal University,100875,Beijing,China
2. Shaanxi Engineering Research Center of Controllable Neutron Source,School of Electronic Information,Xijing University,710123, Xi’an,Shaanxi,China
3. Shaanxi International Joint Research Center for Applied Technology of Controllable Neutron Source, School of Electronic Information,Xijing University,710123,Xi’an,Shaanxi,China
4. Southwest Institute of Technical Physics,610041,Chengdu,Sichuan,China
Abstract: Quantum metrology based on quantum entanglement and quantum coherence improves the accuracy of measurements. This paper briefly reviews schemes of quantum metrology in various complex environments,including non-Markovian noise,correlated noise,and two-photon relaxation. The booming development of quantum information allows one to utilize quantum simulation experiments to test the feasibility of various theoretical schemes and demonstrate the rich physical phenomena in different baths.
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