Integration of highly probabilistic sources into optical quantum architectures: perpetual quantum computation

TL;DR

This paper proposes an optical quantum computing architecture that uses a single probabilistic photon source to create a scalable, large-scale 3D cluster state, eliminating the need for deterministic photon sources and high-fidelity detectors.

Contribution

It introduces a novel design for an optical topological cluster state computer using only one type of quantum component, simplifying the architecture and reducing resource requirements.

Findings

Eliminates the need for on-demand high-fidelity photon sources.

Uses probabilistic elements while maintaining large-scale structure.

Enables recycling of photons for deep 3D cluster state preparation.

Abstract

In this paper we introduce a design for an optical topological cluster state computer constructed exclusively from a single quantum component. Unlike previous efforts we eliminate the need for on demand, high fidelity photon sources and detectors and replace them with the same device utilised to create photon/photon entanglement. This introduces highly probabilistic elements into the optical architecture while maintaining complete specificity of the structure and operation for a large scale computer. Photons in this system are continually recycled back into the preparation network, allowing for a arbitrarily deep 3D cluster to be prepared using a comparatively small number of photonic qubits and consequently the elimination of high frequency, deterministic photon sources.