Fig. 1: Experimental setup for remote transport of high-dimensional OAM states and the quantum imaging with interaction-free light. | Nature Communications

Fig. 1: Experimental setup for remote transport of high-dimensional OAM states and the quantum imaging with interaction-free light.

From: Remote transport of high-dimensional orbital angular momentum states and ghost images via spatial-mode-engineered frequency conversion

Fig. 1

Inset a shows the measured two-photon 7-dimensional OAM spectrum, b and c illustrate the holographic gratings used for encoding the three-leaf and four-leaf Clover images. By switching the flipper mirror (FM), full tomography for the transported OAM superposition states and the capture of the ghost images can be conducted by using the coincidence circuit (C.C) and the ICCD camera, respectively. See the Methods for details. LBO Lithium triborate crystal, BBO β-barium borate crystal, DM dichroic mirror, SM single-mode fiber, SLM spatial light modulator, SPCM single photon counting module, PMT photon multiplier tube, RAP right-angle prism, DP Dove prism, M mirror, L lens, F filter.

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