Neutrinos as Quantum Information Carriers? A Gap Analysis Against the DiVincenzo Criteria

Photons, trapped ions, neutral atoms, and superconducting circuits are all well-known quantum information platforms. Neutrinos offer a unique possibility, displaying quantum interference (flavour oscillation) over thousands of kilometres, yet interacting so weakly that they can travel through the Earth with minimal interaction. This short paper is a gap analysis. We use information from the existing literature to compare neutrinos to the seven DiVincenzo requirements. Firstly, there are five requirements to do with computation and secondly two requirements to do with communication. We analyse where the gaps are for each requirement. Overall, we find that neutrinos have high fidelity and good coherence; however, they do not have a clear qubit definition and initialisation. They do not have universal gates, individual qubit readout, or stationary-to-flying conversion, meaning they either fail or are very poor. Therefore, we think they are best considered as an exceptional flying information carrier; however, they are very difficult to control. We have outlined all of the gaps which can be used to inform future work.