Step-by-step magic state encoding for efficient fault-tolerant quantum computation.

ABSTRACT: Quantum error correction allows one to make quantum computers fault-tolerant against unavoidable errors due to decoherence and imperfect physical gate operations. However, the fault-tolerant quantum computation requires impractically large computational resources for useful applications. This is a current major obstacle to the realization of a quantum computer. In particular, magic state distillation, which is a standard approach to universality, consumes the most resources in fault-tolerant quantum computation. For the resource problem, here we propose step-by-step magic state encoding for concatenated quantum codes, where magic states are encoded step by step from the physical level to the logical one. To manage errors during the encoding, we carefully use error detection. Since the size

SUBMITTER: Goto H 

PROVIDER: S-EPMC4267199 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature