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
RIKEN
Xi'an Jiaotong University
Huan Yu Ku
RIKEN
National Cheng Kung University
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
RIKEN
University of Michigan
Physical Review A
24699926 (ISSN) 24699934 (eISSN)
Vol. 105 4 042610Giant atoms - a new regime in quantum optics
Swedish Research Council (VR) (2019-03696), 2020-01-01 -- 2023-12-31.
Wallenberg Centre for Quantum Technology (WACQT)
Knut and Alice Wallenberg Foundation (KAW 2017.0449, KAW2021.0009, KAW2022.0006), 2018-01-01 -- 2030-03-31.
Subject Categories (SSIF 2011)
Computer Engineering
Computer Science
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1103/PhysRevA.105.042610