Time-bin-encoding-based remote states generation of nitrogen-vacancy centers through noisy channels |
A sketch of W state generation. H1, H2, H3, and H4 denote the HWP with the action on the photon pulse, respectively. The role of the HWP1, HWP2, HWP3, HWP4 is to perform a σ x operation (| R ⟩↔| L ⟩) on the photon. The optical control sequences and requirement of delay lines are the same as GHZ state generation. |