All-optical integrated square root of Pauli-Z (SRZ) gates using polarization and phase encoding

Abstract

Quantum square root of Pauli-Z (SRZ) gate is a very important logical gate in the world of quantum computing. It is very difficult to implement such type of gate physically because of the complex nature of qubits. Here, the authors propose a simple method of implementation of an integrated system of all-optical SRZ gate using polarization and phase encoding technique jointly. This is done because the joint use of both the encoding techniques is found to be very suitable to implement the gate matrix physically.