A three-layer free-space setup with SLMs and wave plates implements unitaries equivalent to 30-step quantum walks on 1D/2D lattices, distributing one input to over 7000 outputs while supporting disorder, gauge fields, and topology.
et al., Detection of Zak phases and topolog- ical invariants in a chiral quantum walk of twisted pho- tons, Nat
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Compact and programmable large-scale optical processor in free space
A three-layer free-space setup with SLMs and wave plates implements unitaries equivalent to 30-step quantum walks on 1D/2D lattices, distributing one input to over 7000 outputs while supporting disorder, gauge fields, and topology.