Identifying the information gain of a quantum measurement

  title={Identifying the information gain of a quantum measurement},
  author={M. Berta and J. M. Renes and M. Wilde},
  • M. Berta, J. M. Renes, M. Wilde
  • Published in ISIT 2014
  • Mathematics, Computer Science
  • — We show that quantum-to-classical channels, i.e., quantum measurements, can be asymptotically simulated by an amount of classical communication equal to the quantum mutual information of the measurement, if sufficient shared randomness is available. This result generalizes Winter's measurement compression theorem for fixed independent and identically distributed inputs to arbitrary inputs, and more importantly, it identifies the quantum mutual information of a measurement as the information… CONTINUE READING
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