Wang, Yi-Xuan
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Wang, Yi-Xuan
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Publication Access status: Open Access , Quantum LOSR networks cannot generate graph states with high fidelity(2024); ; Quantum networks lead to novel notions of locality and correlations and an important problem concerns the question of which quantum states can be experimentally prepared with a given network structure and devices and which not. We prove that all multi-qubit graph states arising from a connected graph cannot originate from any quantum network with bipartite sources, as long as feed-forward and quantum memories are not available. Moreover, the fidelity of a multi-qubit graph state and any network state cannot exceed 9/10. Similar results can also be established for a large class of multi-qudit graph states.Source Type:Article12 64
