npj Quantum Information 11, 69 (2025)

Jiaying Yang, Ingrid Strandberg, Alejandro Vivas-Viana, Akshay Gaikwad, Claudia Castillo-Moreno, Anton Frisk Kockum, Muhammad Asad Ullah, Carlos Sanchez Munoz, Axel Martin Eriksson, Simone Gasparinetti

Preprint Published version

Entanglement is key to quantum networks. We demonstrate a method to generate entangled microwave photons via a driven superconducting circuit. Our method enables time- and frequency-matched entanglement of sideband modes in the resonance fluorescence spectrum. These orthogonal modes can be stored in separate quantum memories, enabling high-rate entanglement distribution across platforms, with applications in waveguide QED, distributed quantum computing, and quantum communication networks.