Separated Schmidt modes in the angular spectrum of biphotons
arXiv:1905.07134 · doi:10.1088/1612-202X/ab27b5
Abstract
We prepare qudits based on angular multimode biphoton states by modulating the pump angular spectrum. The modes are prepared in the Schmidt basis and their intensity distributions do not overlap in space. This allows one to get rid of filtering losses while addressing single modes and to realize a single-shot qudit readout.
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