One-way quantum computation via manipulation of polarization and momentum qubits in two-photon cluster states

TL;DR

This paper demonstrates the use of two-photon cluster states entangled in polarization and momentum to perform universal quantum gates, showcasing their potential for efficient one-way quantum computing.

Contribution

It introduces a method to implement single-qubit rotations and C-NOT gates using two-photon cluster states with high fidelity, highlighting their computational utility.

Findings

Successful realization of single-qubit rotations and C-NOT gate

High fidelity achieved in quantum gate operations

Validation of two-photon cluster states for quantum computing

Abstract

Four-qubit cluster states of two photons entangled in polarization and linear momentum have been used to realize a complete set of single qubit rotations and the C-NOT gate for equatorial qubits with high values of fidelity. By the computational equivalence of the two degrees of freedom our result demonstrate the suitability of two photon cluster states for rapid and efficient one-way quantum computing.