Demonstration of a deterministic two-phonon (N=2 N00N) entangled state between mechanical resonators on separate substrates, with fidelities 0.87 (Bell) and 0.75 (N00N).
Alternatively, we can generate ( |N 0⟩ + |0M ⟩)/ √ 2 N00M states, if one qubit is initially excited to its |f ⟩ state while the other qubit remains in |e⟩
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Deterministic multi-phonon entanglement between two mechanical resonators on separate substrates
Demonstration of a deterministic two-phonon (N=2 N00N) entangled state between mechanical resonators on separate substrates, with fidelities 0.87 (Bell) and 0.75 (N00N).