The time evolution of multi-neutrino entanglement and correlations are studied in two-flavor collective neutrino oscillations, relevant for dense neutrino environments, building upon previous works. Specifically, simulations performed of systems with up to 12 neutrinos using Quantinuum’s H1-1 20 qubit trapped-ion quantum computer are used to compute $n$-tangles, and two- and three-body correlations, probing beyond mean-field descriptions. $n$-tangle rescalings are found to converge for large system sizes, signaling the presence of genuine multi-neutrino entanglement.

• Received 7 December 2022
• Revised 27 April 2023
• Accepted 28 April 2023

DOI:https://doi.org/10.1103/PhysRevLett.130.221003