Perfect transfer of entanglement and quantum steering via parametric frequency converterAmjad Sohail, Abdelkader Hidki, Allah Nawaz, Hazrat Ali, Rizwan Ahmed and Marcos César de OliveiraEur. Phys. J. D, 79 9 (2025) 113DOI: https://doi.org/10.1140/epjd/s10053-025-01066-y