Nature Physics, Published online: 09 December 2024; doi:10.1038/s41567-024-02706-7
In a device comprising two double quantum dots separated by a 250-μm-long superconducting resonator, virtual photons in the resonator are shown to mediate the coupling of electron spins between the quantum dots. When the spin–spin coupling is activated for a controlled duration, oscillations between the spins are observed.
