Quantum estimation for quantum technology

  title={Quantum estimation for quantum technology},
  author={Matteo G. A. Paris},
  journal={International Journal of Quantum Information},
  • M. Paris
  • Published 18 April 2008
  • Physics
  • International Journal of Quantum Information
Several quantities of interest in quantum information, including entanglement and purity, are nonlinear functions of the density matrix and cannot, even in principle, correspond to proper quantum o... 

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