Heralded detection is widely used in quantum information processing, as it allows real-time tuning the properties of a heralded photon by acting on the heralding photon. With polarization-entangled photon pairs, the authors use a geometric phase metasurface to achieve a remote and continuous control of the vortex states of the heralded photon.
- Hong Liang
- Hammad Ahmed
- Jensen Li
