Method of Error Floor Mitigation in Low-Density Parity-Check CodesĪ digital communication decoding method for low-density parity-check coded messages. We demonstrate the implementation of a CPC code on real hardware, by designing a [[4, 2, 2 In this paper, we provide a detailed introduction to CPC codes using conventional quantum circuit notation. CPC codes have a canonical structure involving successive rounds of bit and phase parity checks, supplemented by cross- checks to fix the code distance. Roffe, Joschka Headley, David Chancellor, Nicholas Horsman, Dominic Kendon, VivĬoherent parity check (CPC) codes are a new framework for the construction of quantum error correction codes that encode multiple qubits per logical block.
Protecting quantum memories using coherent parity check codes
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