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Identification of open quantum systems from observable time traces

Zhang, Jun; Sarovar, Mohan S.

Estimating the parameters that dictate the dynamics of a quantum system is an important task for quantum information processing and quantum metrology, as well as fundamental physics. In this paper we develop a method for parameter estimation for Markovian open quantum systems using a temporal record of measurements on the system. The method is based on system realization theory and is a generalization of our previous work on identification of Hamiltonian parameters [Phys. Rev. Lett. 113, 080401 (2014)PRLTAO0031-9007 10.1103/PhysRevLett.113.080401].