Quantum coherence and coherence length of correlated Gaussian states Pedro P. da Silva, Carlos H. S. Vieira, Marcos Sampaio, Jonas F. G. Santos and Irismar G. da Paz Eur. Phys. J. Plus, 138 3 (2023) 210 Published online: 05 March 2023 DOI: 10.1140/epjp/s13360-023-03836-2