Deterministic one-way logic gates on a cloud quantum computer
Journal article, 2022

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.

Author

Zhi Peng Yang

Xi'an Jiaotong University

RIKEN

Huan Yu Ku

National Cheng Kung University

RIKEN

Alakesh Baishya

RIKEN

Yu Ran Zhang

RIKEN

Anton Frisk Kockum

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Yueh Nan Chen

National Cheng Kung University

RIKEN

Fu Li Li

Xi'an Jiaotong University

Jaw Shen Tsai

RIKEN

Tokyo University of Science

F. Nori

University of Michigan

RIKEN

Physical Review A

24699926 (ISSN) 24699934 (eISSN)

Vol. 105 4 042610

Giant atoms - a new regime in quantum optics

Swedish Research Council (VR) (2019-03696), 2020-01-01 -- 2023-12-31.

Subject Categories

Computer Engineering

Computer Science

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1103/PhysRevA.105.042610

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