Piggybacking on quantum streams
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This paper shows that it is possible to piggyback classical information on a stream of qubits protected by quantum error-correcting codes. The piggyback channel can be created by introducing intentional errors corresponding to a controlled sequence of syndromes. These syndromes are further protected, when quantum noise is present, by classical error-correcting codes according to a performance-delay trade-off. Classical information can thus be added and extracted at arbitrary epochs without consuming additional quantum resources and without disturbing the quantum stream.
Date issued
2020Department
Massachusetts Institute of Technology. Laboratory for Information and Decision SystemsJournal
Physical Review A
Publisher
American Physical Society (APS)