All Q-Operations

  • Lajos Diósi
Part of the Lecture Notes in Physics book series (LNP, volume 827)


So far we have learned certain particular q-operations like the unitary transformations, the q-measurements, and the reduction of state. The set of generic q-operations is much larger. We learn the elegant mathematical classification. We discuss its various physical interpretations typically involving the temporary enlargement of the system by a certain environmental system, subsequent unitary and measurement operations on the obtained composite system, and an ultimate reduction to the original system.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.MTA BudapestKFKI Research Institute for Particle & Nuclear Physics (RMKI)BudapestHungary

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