Abstract
Determining the state of a quantum system is a central task in quantum information processing since it encompasses the read-out problem. Very often the optimized state discrimination strategy is a generalized measurement (Positive Operator Valued Measure, POVM). Therefore, we begin with a brief introduction to the theory of generalized measurements and illustrate the power of the concept on examples relevant to applications in quantum cryptography.

This publication has 24 references indexed in Scilit: