Science Advances

Supplementary Materials

This PDF file includes:

  • Fig. S1. Band structure of the QW system.
  • Fig. S2. Holograms for the preparation of the OAM initial state before the QW process.
  • Fig. S3. Supplementary data for the four-step quantum walk for a single photon, with various input polarization states.
  • Fig. S4. Two-photon QW apparatus.
  • Fig. S5. Experimental verification of the indistinguishability of the two-photon source through polarization Hong-Ou-Mandel (HOM) interference.
  • Fig. S6. Experimental violation of correlation inequalities for two photons that have completed the standard QW (δ = π).
  • Fig. S7. Experimental violation of correlation inequalities for two photons that have completed the hybrid QW (δ = π/2).
  • Table S1. Power coefficients of the various p-index terms appearing in the expansion of the beam emerging from a QP (with q = 1/2) in the LG mode basis, assuming that the input is an L-polarized LG mode with p = 0 and the given OAM m value.

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