Publisher Correction to: Classical optical analogue of quantum discord Jacob M. Leamer, Wenlei Zhang, Nicholas J. Savino, Ravi K. Saripalli, Sanjaya Lohani, Ryan T. Glasser and Denys I. Bondar Eur. Phys. J. Spec. Top., 232 20-22 (2023) 3353 Published online: 10 October 2023 DOI: 10.1140/epjs/s11734-023-00999-y