Patent ID: 9130598
Filing Date: 2015-09-08
Classification: G06N,H03M

Abstract:
1. A decoding apparatus for use in encoded Bell measurement for two encoded qubits, comprising: a first acquisition unit configured to acquire first measurement values of measurements performed to measure an eigenvalue of an encoded Z operator with respect to a first encoded qubit of the two encoded qubits; a second acquisition unit configured to acquire second measurement values of measurements performed to measure an eigenvalue of an encoded X operator with respect to a second encoded qubit of the two encoded qubits; a holding unit configured to hold error probabilities for the first measurement values and the second measurement values; a calculation unit configured to calculate probabilities for measurement values of the encoded Bell measurement by using the first measurement values, the second measurement values, and the error probabilities; and a decision unit configured to decide measurement values of the encoded Bell measurement, based on the probabilities calculated by the calculation unit, wherein the eigenvalue of the encoded Z operator and the eigenvalue of the encoded X operator being measurement values of the Bell measurement.