Patent ID: 11948047
Assignee: ALMA MATER STUDIORUM—UNIVERSITA' DI BOLOGNA
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. A quantum communication system configured to send first data as quantum information in qubits (|φ) and classical second data (Si) over a quantum channel, comprising a quantum information transmission module which includes a quantum error correction (QECC) encoder configured to apply QECC encoding to said qubits (|φ) obtaining quantum information codewords (|ψ),
wherein said quantum information transmission module is configured to
apply intentional errors (Pi) having error syndromes (Si) representing said second classical data to said quantum information codewords (|ψ) obtaining quantum information codewords with intentional errors (Pi) applied upon (Pi|ψi), and
transmit from a transmitting side said quantum information codewords with intentional errors applied upon (Pi|ψi) over said quantum channel which outputs received codewords (Pi|ψi; EiPi|ψi) at a receiver module comprised in said system,
said receiver module being configured to
compute error syndromes (Si;; Ri) from said received codewords (Pi|ψi; EiPi|ψi),
perform a QECC error correction operation on said received codewords (Pi|ψi; EiPi|ψi) by applying a correction operator ({circumflex over (P)}i†,{circumflex over (P)}i†Êi†) obtained at least by said computed syndromes (Si;; Ri) to obtain corrected codewords (|{circumflex over (ψ)}i),
output said corrected codewords (|{circumflex over (ψ)}i) and said computed syndromes (Si;).