The new method offers a straightforward approach to imprint the geometric phase from a classical laser beam and transfer it directly onto a pair of entangled photons.
Gelechia bilobuncusa (top, left: ), Gelechia adi (top, right), and Istrianis ladakhensis (bottom). Image credit: Authors, https://doi.org/10.11646/zootaxa.5728.1.6
New Delhi/