"Revolutionary Metalens Empowers Quantum Emission Control"
Scientists have developed a multifunctional metalens that can manipulate and structure quantum emissions from solid-state single photon emitters (SPEs) such as hexagonal boron nitride (hBN) defects. The metalens, which can tailor the directionality, polarization, and orbital angular momentum (OAM) degrees of freedom, allows for arbitrary shaping of quantum emission in multiple dimensions. This breakthrough technology has the potential to advance quantum photonic applications and enable the generation of high-dimensional single-photon hybrid quantum states, leading to improved quantum information science and the development of more secure quantum networks.