Experimental realization of deterministic joint remote preparation of an arbitrary two-qubit pure state via GHZ states

By employing two tripartite GHZ states as the entanglement channel, we realized the deterministic JRSP protocol of six unique initial two-qubit states on the Origin Wuyuan 6-qubit chip, with the measured average fidelities exceeding 0.4. Moreover, we employ the Origin NQVM to simulate the JRSP protocol in the presence of four noise environments. To enhance fidelity, we proposed substituting the two Hadamard gates in the GHZ state preparation circuit with parameterized unitary operations. Simulated results on NQVM indicate that this approach can be implemented in the actual JRSP experiment. Our work proves the experimental feasibility of JRSP of an arbitrary two-qubit state and could pave the way for developing and verifying more complex quantum communication tasks.