| （英） |
Quantum non-locality is a phenomenon in which the measurement results of a quantum state cannot be reproduced locally in classical computation. This property has various applications in the field of quantum computation theory, and in particular, quantum non-locality on cycle graphs by Barrett et al. is used in the proof of the quantum advantage with shallow circuits by Bravyi, Gosset, and K{"o}nig. In support of these theoretical results, it is very important to know whether quantum non-locality can be realized on existing quantum devices. We have conducted experiments on IBM Quantum, one of the near-term quantum devices, and confirmed that quantum non-locality is partially realized for a small number of qubits. In addition, we performed readout error mitigation for some cases. In this report, we summarize the results and discussion of the experiments. |