Deterministic one-way logic gates on a cloud quantum computer
One-way quantum computing is a promising candidate for fault-tolerant quantum
computing. Here, we propose new protocols to realize a deterministic one-way
CNOT gate and one-way $X$-rotations on 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
(LOCC). 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.
Zhi-Peng Yang Alakesh Baishya Huan-Yu Ku Yu-Ran Zhang Anton Frisk Kockum Yueh-Nan Chen Fu-Li Li Jaw-Shen Tsai Franco Nori