Quantum optical systems require sources of single photons, entangled photons, and other forms of non-classical light, along with advanced detection techniques. The quantum states might rely on various light properties such as polarization, direction, and orbital angular momentum. Metasurfaces hold immense promise for manipulating these states.

Quantum optical systems require sources of single photons, entangled photons, and other forms of non-classical light, along with advanced detection techniques. The quantum states might rely on various light properties such as polarization, direction, and orbital angular momentum. Metasurfaces hold immense promise for manipulating these states.