Implementation of phase gates using single photons

TL;DR

This paper discusses implementing phase gates for quantum computing using single photons focused near the diffraction limit, which is essential for algorithms involving the quantum Fourier transform.

Contribution

It presents a method for implementing phase gates with single photons in optical quantum computing, leveraging focused beams near the diffraction limit.

Findings

Feasible implementation of phase gates with single photons.

Potential for integration into optical quantum computing systems.

Enhancement of quantum Fourier transform operations.

Abstract

Quantum computing algorithms using the quantum Fourier transform require repeated use of a phase shift gate. In the case of qubits using optical photons for operation, this gate can be implemented using single-photon beams focused close to the diffraction limit.