TY - JOUR
T1 - Detecting temporal correlation via quantum random number generation
AU - Shikano, Yutaka
AU - Tamura, Kentaro
AU - Raymond, Rudy
N1 - Funding Information:
The authors thank Hermanni Heimonen, Gregor Weihs, Atsushi Iwasaki, and Hidetoshi Okutomi for valuable discussion. Some of the authors (Y.S., K.T.) are also grateful to Patrick Mensac and Francois Varchon of the IBM Q Network support team for sharing information on the qubit initialization in IBM Q systems. This work is partially supported by JSPS KAKENHI (Grant Nos. 17K05082 and 19H05156) and JST, PRESTO (feasibility study of specific research proposal) Grant Number JPMJPR19MB. The results presented in this paper were obtained in part using an IBM Q quantum computing system as part of the IBM Q Network.
Publisher Copyright:
© Y. Shikano, K. Tamura & R. Raymond.
PY - 2020/4/3
Y1 - 2020/4/3
N2 - 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.
AB - 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.
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U2 - 10.4204/EPTCS.315.2
DO - 10.4204/EPTCS.315.2
M3 - Conference article
AN - SCOPUS:85083241704
SN - 2075-2180
VL - 315
SP - 18
EP - 25
JO - Electronic Proceedings in Theoretical Computer Science, EPTCS
JF - Electronic Proceedings in Theoretical Computer Science, EPTCS
T2 - 9th International Conference on Quantum Simulation and Quantum Walks, QSQW 2019
Y2 - 20 January 2020 through 24 January 2020
ER -