Relation between state-distinction power and disturbance in quantum   measurements
  The measurement of an informative observable strongly disturbs a quantum state. We examine the so-called information-disturbance relation by introducing order relations based on the state distinction power of an observable and a variety of non-disturbed observables with respect to a channel, and obtain qualitative and quantitative representations. 
Ikko Hamamura, Takayuki Miyadera
quant-ph