Bosonic CNOT gates with Quantum Interrogation

TL;DR

This paper proposes a novel bosonic quantum CNOT gate scheme using quantum interrogation with atoms and ions, enabling nondestructive, high-probability universal quantum gates with simpler implementation.

Contribution

It introduces a new bosonic particle-based CNOT gate scheme leveraging quantum interrogation and particle collision, enhancing quantum computing capabilities.

Findings

Gates are nondestructive and valid for arbitrary inputs.

Gate success probability can approach unity in lossless conditions.

Implementation requires only basic atom optics elements.

Abstract

We put forward a new CNOT gate scheme with atoms and ions based on quantum interrogation and a bosonic particle extension of the models of linear optics quantum computation. We show how the possibility of particle collision can provide the strong interaction that is needed for universal quantum gates. Two atom optics proposals are provided. Unlike previous schemes, these gates are at the same time nondestructive, valid for arbitrary inputs and can work with a probability as close to unity as desired in the lossless case. Data is encoded into position modes and the gates only require basic atom optics elements, which gives potentially simpler quantum computer implementations.