Journal
PHYSICAL REVIEW A
Volume 105, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.105.042610
Keywords
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Categories
Funding
- China Scholarship Council
- National Nature Science Foundation of China [12074307]
- Ministry of Science and Technology, Taiwan (MOST) [110-2811-M-006-546]
- Japan Society for the Promotion of Science (JSPS) [P19326]
- KAKENHI [JP19F19326]
- Japan Society for the Promotion of Science (BRIDGE Fellowship) [BR190501]
- Swedish Research Council [2019-03696]
- Knut and Alice Wallenberg Foundation through the Wallenberg Centre for Quantum Technology
- National Center for Theoretical Sciences and Ministry of Science and Technology, Taiwan, MOST [110-2123-M-006-001]
- ARO [W911NF-18-1-0358]
- Japan Science and Technology Agency (JST, via Moonshot RD) [JPMJMS2067]
- CREST [JPMJCR1676]
- New Energy and Industrial Technology Development Organization, Japan [JPNP16007]
- Nippon Telegraph and Telephone Corporation Research, JST (via the Quantum Leap Flagship Program, Moonshot RD) [JPMJMS2061]
- Centers of Research Excellence in Science and Technology [JPMJCR1676]
- JSPS [JP20H00134]
- Asian Office of Aerospace Research and Development Grant [FA2386-20-1-4069]
- Foundational Questions Institute Fund [FQXi-IAF19-06]
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This paper proposes protocols for realizing a deterministic one-way controlled-NOT (CNOT) gate and one-way X rotations, and demonstrates their feasibility by running experiments on the cloud quantum-computing platform IBM Quantum Experience.
One-way quantum computing is a promising candidate for fault-tolerant quantum computing. Here, we propose protocols to realize a deterministic one-way controlled-NOT (CNOT) gate and one-way X rotations on current quantum-computing platforms. By applying a delayed-choice scheme, we overcome a limit of most currently available quantum computers, which are unable to implement further operations on measured qubits or operations conditioned on measurement results from other qubits. Moreover, we decrease the error rate of the one-way logic gates, compared to the original protocol using local operations and classical communication. In addition, we apply our deterministic one-way CNOT gate in the Deutsch-Jozsa algorithm to show the feasibility of our proposal. We demonstrate all these one-way gates and algorithms by running experiments on the cloud quantum-computing platform IBM Quantum Experience.
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