，成果详细信息-全讯担保网

we report the first observation of simultaneous excitation of two noninteracting atoms by a pair of time-frequency correlated photons in a superconducting circuit. the strong coupling regime of this process enables the synthesis of a three-body interaction hamiltonian, which allows the generation of the tripartite greenberger-horne-zeilinger state in a single step with a fidelity as high as 0.95. we further demonstrate the inhibition of the simultaneous two-atom excitation by continuously measuring whether the first photon is emitted. this work provides a new route in synthesizing many-body interaction hamiltonian and coherent control of entanglement.