Fault-tolerant interface between quantum memories and quantum processors.

ABSTRACT: Topological error correction codes are promising candidates to protect quantum computations from the deteriorating effects of noise. While some codes provide high noise thresholds suitable for robust quantum memories, others allow straightforward gate implementation needed for data processing. To exploit the particular advantages of different topological codes for fault-tolerant quantum computation, it is necessary to be able to switch between them. Here we propose a practical solution, subsystem lattice surgery, which requires only two-body nearest-neighbor interactions in a fixed layout in addition to the indispensable error correction. This method can be used for the fault-tolerant transfer of quantum information between arbitrary topological subsystem codes in two dimensions and beyond

SUBMITTER: Poulsen Nautrup H 

PROVIDER: S-EPMC5674034 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature