Figure 2

Photon source for generation of Schubert matrices with nanometre-scale photoisomerization in photochromic crystal and double-probe SPM measurements. (a) Formation of transparent path by photoisomerization with spontaneous symmetry breaking. (b) Chain of anisotropic local photoisomerizations from local photoexcitation. (c) Detection of photons propagating along the transparent path in a photochromic crystal for Schubert matrix generation. (d–f) Photon detection probability density maps with dimensions of 4 × 4, 8 × 8, and 16 × 16 generated by coarse graining of optical near-field images.