Solution to the mean king's problem using quantum error-correcting codes

Masakazu Yoshida, Gen Kimura, Takayuki Miyadera, Hideki Imai, Jun Cheng

Research output: Contribution to journalArticle

4 Citations (Scopus)


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.

Original languageEnglish
Article number052326
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5
Publication statusPublished - 2015 May 26


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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