Experimental Simulation of Larger Quantum Circuits with Fewer Superconducting Qubits.

Ying, C; Cheng, B; Zhao, Y; Huang, H-L; Zhang, Y-N; Gong, M; Wu, Y; Wang, S; Liang, F; Lin, J; Xu, Y; Deng, H; Rong, H; Peng, C-Z; Yung, M-H; Zhu, X; Pan, J-W

Experimental Simulation of Larger Quantum Circuits with Fewer Superconducting Qubits.

Ying, C Cheng, B

Zhao, Y Huang, H-L Zhang, Y-N Gong, M Wu, Y Wang, S Liang, F Lin, J Xu, Y Deng, H Rong, H Peng, C-Z Yung, M-H Zhu, X Pan, J-W

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Publisher:: AMER PHYSICAL SOC
Publication Type:: Journal Article
Citation:: Phys Rev Lett, 2023, 130, (11), pp. 110601
Issue Date:: 2023-03-17

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Field	Value	Language
dc.contributor.author	Ying, C
dc.contributor.author	Cheng, B https://orcid.org/0000-0003-1643-7517
dc.contributor.author	Zhao, Y
dc.contributor.author	Huang, H-L
dc.contributor.author	Zhang, Y-N
dc.contributor.author	Gong, M
dc.contributor.author	Wu, Y
dc.contributor.author	Wang, S
dc.contributor.author	Liang, F
dc.contributor.author	Lin, J
dc.contributor.author	Xu, Y
dc.contributor.author	Deng, H
dc.contributor.author	Rong, H
dc.contributor.author	Peng, C-Z
dc.contributor.author	Yung, M-H
dc.contributor.author	Zhu, X
dc.contributor.author	Pan, J-W
dc.date.accessioned	2024-03-14T04:02:39Z
dc.date.available	2023-02-21
dc.date.available	2024-03-14T04:02:39Z
dc.date.issued	2023-03-17
dc.identifier.citation	Phys Rev Lett, 2023, 130, (11), pp. 110601
dc.identifier.issn	0031-9007
dc.identifier.issn	1079-7114
dc.identifier.uri	http://hdl.handle.net/10453/176695
dc.description.abstract	Although near-term quantum computing devices are still limited by the quantity and quality of qubits in the so-called NISQ era, quantum computational advantage has been experimentally demonstrated. Moreover, hybrid architectures of quantum and classical computing have become the main paradigm for exhibiting NISQ applications, where low-depth quantum circuits are repeatedly applied. In order to further scale up the problem size solvable by the NISQ devices, it is also possible to reduce the number of physical qubits by "cutting" the quantum circuit into different pieces. In this work, we experimentally demonstrated a circuit-cutting method for simulating quantum circuits involving many logical qubits, using only a few physical superconducting qubits. By exploiting the symmetry of linear-cluster states, we can estimate the effectiveness of circuit-cutting for simulating up to 33-qubit linear-cluster states, using at most 4 physical qubits for each subcircuit. Specifically, for the 12-qubit linear-cluster state, we found that the experimental fidelity bound can reach as much as 0.734, which is about 19% higher than a direct implementation on the same 12-qubit superconducting processor. Our results indicate that circuit-cutting represents a feasible approach of simulating quantum circuits using much fewer qubits, while achieving a much higher circuit fidelity.
dc.format	Print
dc.language	eng
dc.publisher	AMER PHYSICAL SOC
dc.relation.ispartof	Phys Rev Lett
dc.relation.isbasedon	10.1103/PhysRevLett.130.110601
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	01 Mathematical Sciences, 02 Physical Sciences, 09 Engineering
dc.subject.classification	General Physics
dc.subject.classification	40 Engineering
dc.subject.classification	49 Mathematical sciences
dc.subject.classification	51 Physical sciences
dc.title	Experimental Simulation of Larger Quantum Circuits with Fewer Superconducting Qubits.
dc.type	Journal Article
utslib.citation.volume	130
utslib.location.activity	United States
utslib.for	01 Mathematical Sciences
utslib.for	02 Physical Sciences
utslib.for	09 Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Computer Science
utslib.copyright.status	in_progress	*
dc.date.updated	2024-03-14T04:02:37Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	130
utslib.citation.issue	11

Abstract:

Although near-term quantum computing devices are still limited by the quantity and quality of qubits in the so-called NISQ era, quantum computational advantage has been experimentally demonstrated. Moreover, hybrid architectures of quantum and classical computing have become the main paradigm for exhibiting NISQ applications, where low-depth quantum circuits are repeatedly applied. In order to further scale up the problem size solvable by the NISQ devices, it is also possible to reduce the number of physical qubits by "cutting" the quantum circuit into different pieces. In this work, we experimentally demonstrated a circuit-cutting method for simulating quantum circuits involving many logical qubits, using only a few physical superconducting qubits. By exploiting the symmetry of linear-cluster states, we can estimate the effectiveness of circuit-cutting for simulating up to 33-qubit linear-cluster states, using at most 4 physical qubits for each subcircuit. Specifically, for the 12-qubit linear-cluster state, we found that the experimental fidelity bound can reach as much as 0.734, which is about 19% higher than a direct implementation on the same 12-qubit superconducting processor. Our results indicate that circuit-cutting represents a feasible approach of simulating quantum circuits using much fewer qubits, while achieving a much higher circuit fidelity.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/176695