Processamento da informação com estados coerentes: funções lógicas AND & OR usando óptica linear

Abstract

Quantum computation is an emergent reality in our era. Several proposals and techniques lead to the quantum hardware development, showing to our generation devices capable to manipulate information provable safe and fast, based on quantum mechanics postulates. Among the techniques used to implement the quantum computer, we highlight the linear optics, which has been a lot of times tested. Using light and its effects, optical devices are used to assembly optical systems. This work proposes an optical system, that’s able to implement the logic functions, AND, OR, NAND and NOR probabilistically. The efficiency has been proven to be of 1/8 using only linear optics and linear optical devices for coherent states encoded qubits.