Identification of open quantum systems from observable time traces

Jun Zhang and Mohan Sarovar
Phys. Rev. A 91, 052121 – Published 27 May 2015

Abstract

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)].

  • Figure
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  • Received 24 March 2015

DOI:https://doi.org/10.1103/PhysRevA.91.052121

©2015 American Physical Society

Authors & Affiliations

Jun Zhang

  • Joint Institute of UM-SJTU and Key Laboratory of System Control and Information Processing (MOE), Shanghai Jiao Tong University, Shanghai, 200240, China

Mohan Sarovar*

  • Department of Scalable & Secure Systems Research, Sandia National Laboratories, Livermore, California 94550, USA

  • *mnsarov@sandia.gov

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Vol. 91, Iss. 5 — May 2015

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