Claire GU, Scott Campbell and Pochi Yeh
Grating degeneracy in volume holography has been a source of crosstalk noise during the readout of stored holograms. Special arrangement of input pixels1 (e.g., fractal sampling) is often needed to avoid crosstalk noise in optical storage, interconnections, and neural networks. Recently the authors showed that grating degeneracy can be used to perform summation operations in a matrix-matrix multiplication. This is the first useful application of grating degeneracy ever reported.
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