Detecting temporal correlation via quantum random number generation

Yutaka Shikano, Kentaro Tamura, Rudy Raymond

Research output: Contribution to journalConference articlepeer-review


All computing devices, including quantum computers, must exhibit that for a given input, an output is produced in accordance with the program. The outputs generated by quantum computers that fulfill these requirements are not temporally correlated, however. In a quantum-computing device comprising solid-state qubits such as superconducting qubits, any operation to rest the qubits to their initial state faces a practical problem. We applied a statistical analysis to a collection of random numbers output from a 20-qubit superconducting-qubit cloud quantum computer using the simplest random number generation scheme. The analysis indicates temporal correlation in the output of some sequences obtained from the 20 qubits. This temporal correlation may be not related to the relaxation time of each qubit.

Original languageEnglish
Pages (from-to)18-25
Number of pages8
JournalElectronic Proceedings in Theoretical Computer Science, EPTCS
Publication statusPublished - 2020 Apr 3
Event9th International Conference on Quantum Simulation and Quantum Walks, QSQW 2019 - Marseille, France
Duration: 2020 Jan 202020 Jan 24

ASJC Scopus subject areas

  • Software


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