Quantum Process Tomography: Resource Analysis of Different Strategies

  title={Quantum Process Tomography: Resource Analysis of Different Strategies},
  author={Masoud Mohseni and Ali T. Rezakhani and Daniel A. Lidar},
  journal={Physical Review A},
Characterization of quantum dynamics is a fundamental problem in quantum physics and quantuminformation science. Several methods are known which achieve this goal, namely standard quantum-process tomography SQPT, ancilla-assisted process tomography, and the recently proposed scheme of direct characterization of quantum dynamics DCQD. Here, we review these schemes and analyze them with respect to some of the physical resources they require. Although a reliable figure-of-merit for process… 

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