Computer-inspired concept for high-dimensional multipartite quantum gates

TL;DR

This paper introduces computer-inspired methods for manipulating high-dimensional multipartite quantum states using novel measurement and encoding techniques, paving the way for feasible experimental implementations.

Contribution

It presents new concepts for quantum transformations based on a high-dimensional quantum non-demolition measurement and encoding strategies, inspired by computer algorithms.

Findings

Proposes a novel high-dimensional quantum non-demolition measurement.

Introduces encoding/decoding of quantum transformations in ancillary states.

Demonstrates computer algorithms can inspire new scientific ideas.

Abstract

An open question in quantum optics is how to manipulate and control complex quantum states in an experimentally feasible way. Here we present concepts for transformations of high-dimensional multi-photonic quantum systems. The proposals rely on two new ideas: (I) a novel high-dimensional quantum non-demolition measurement, (II) the encoding and decoding of the entire quantum transformation in an ancillary state for sharing the necessary quantum information between the involved parties. Many solutions can readily be performed in laboratories around the world, and identify important pathways for experimental research in the near future. The concept has been found using the computer algorithm Melvin for designing computer-inspired quantum experiments. This demonstrates that computer algorithms can inspire new ideas in science, which is a widely unexplored potential.