We discuss the so-called mean king's problem, a retrodiction problem among noncommutative observables, in the context of error detection. Describing the king's measurement effectively by a single error operation, we give a solution of the mean king's problem using quantum error-correcting codes. The existence of a quantum error-correcting code from a solution is also presented.
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - 2015 May 26|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics