Active one-way quantum computation with 2-photon 4-qubit cluster states

TL;DR

This paper demonstrates deterministic one-way quantum computation using 2-photon 4-qubit cluster states, including single qubit rotations, C-NOT, and C-Phase gates, with fast feed-forward and error correction.

Contribution

It introduces a method for rapid, deterministic one-way quantum computing with 2-photon cluster states, integrating feed-forward and Pauli error corrections.

Findings

Successful implementation of single qubit rotation algorithm

Realization of C-NOT and C-Phase gates

Efficient deterministic quantum computation with 2-photon states

Abstract

By using 2-photon 4-qubit cluster states we demonstrate deterministic one-way quantum computation in single qubit rotation algorithm. In this operation feed-forward measurements are automatically implemented by properly choosing the measurement basis of the qubits, while Pauli error corrections are realized by using two fast driven Pockels cells. We realized also a C-NOT gate for equatorial qubits and a C-Phase gate for a generic target qubit. Our results demonstrate that 2-photon cluster states can be used for rapid and efficient deterministic one-way quantum computing.