The Research On Quantum Coherence Measurement

Quantum computing and quantum information have become important research aspects.In recent years,many results achievements come out in the fields of quantum communication,quantum algorithms,quantum simulation,and quantum machine learning.Quantum coherence is not only a basic concept in quantum mechanics,but also an important resource in quantum computing and quantum information processing.Since the coherence measurement frame based on quantum resource theory was proposed,research on quantum coherence measurement,the evolution quantum coherence in open systems,and the application of quantum coherence in quantum many-body system,quantum thermodynamics,quantum biology and other fields develops rapidly.On the other hand,the measurement method of quantum resource theory itself also has very important significance.This article introduces the basic concepts and simple applications of quantum information and quantum computing in the first part.In the second part,this article introduces the coherence measurement based on quantum resource theory and the measurement function and briefly summarizes the evolution of quantum coherence in open systems,including the ability of some quantum channels producing or destroying coherence,the "freezing" of quantum coherence and other phenomena as well as the application of quantum coherence in quantum algorithms and quantum many-body system.In the third part,the method of quantum resource theory is briefly explained,and the frame of quantum operation measurement based on quantum resource theory is taken as an example.Research on quantum information and quantum computing,quantum coherence,and quantum resource theory is still growing.I believe that more impressive results will emerge in the future.