Trade-off relation between information and disturbance in quantum measurement

  title={Trade-off relation between information and disturbance in quantum measurement},
  author={Tomohiro Shitara and Yui Kuramochi and Masahito Ueda},
  journal={Physical Review A},
When we extract information from a system by performing a quantum measurement, the state of the system is disturbed due to the backaction of the measurement. Numerous studies have been performed to quantitatively formulate tradeoff relations between information and disturbance. We formulate a tradeoff relation between information and disturbance from an estimation-theoretic point of view, and derive an inequality between them. The information is defined as the classical Fisher information… 
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