@article{22637,
  abstract     = {The distribution of entanglement across distant qubits is a central challenge for the operation of scalable quantum computers and large-scale quantum networks. Existing approaches rely on deterministic state transfer, or probabilistic protocols that require active control or measurements and postselection. Here, we demonstrate a fundamentally different, fully autonomous process, where two remote qubits are entangled through their coupling to a quantum-correlated photonic reservoir. In our experiment, a Josephson parametric converter produces a Gaussian, continuous-variable entangled state of propagating microwave fields that drives two spatially separated superconducting transmon qubits into a stationary, discrete-variable entangled state. We also show how qubit tomography unlocks a direct and sensitive verification of two-mode squeezing in the microwave domain. These results establish networks of qubits interfaced with distributed continuous-variable entangled states as a powerful platform for foundational studies and quantum-technology applications.},
  author       = {Andres Juanes, Alejandro and Agustí, J. and Sett, Riya and Redchenko, Elena and Kapoor, Lucky and Hawaldar, Samarth and Rabl, P. and Fink, Johannes M},
  issn         = {2160-3308},
  journal      = {Physical Review X},
  number       = {3},
  publisher    = {American Physical Society},
  title        = {{Distributing stationary qubit entanglement through a nonlocal squeezed reservoir}},
  doi          = {10.1103/r4jt-j39w},
  volume       = {16},
  year         = {2026},
}