Deterministic one-way logic gates on a cloud quantum computer

Zhi Peng Yang, Huan Yu Ku, Alakesh Baishya, Yu Ran Zhang, Anton Frisk Kockum, Yueh Nan Chen, Fu Li Li, Jaw Shen Tsai, Franco Nori

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Article number042610
JournalPhysical Review A
Issue number4
Publication statusPublished - 2022 Apr

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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