|M.Sc Student||Faerman Arkady|
|Subject||Geometric Phase Metasurfaces for Quantum Information|
|Department||Department of Mechanical Engineering||Supervisor||Professor Erez Hasman|
Metamaterials have been a major of research for more than two and a half decades now, involving artificial structures with predesigned electro magnetic properties constructed from deep sub wavelength building blocks. They have been used to demonstrate, theoretically and experimentally, a wealth of fascinating phenomena ranging from negative refractive index and epsilon near zero to cloaking, and even emulations of general relativity effects or super resolution imaging, to name a few. In the past few years, metamaterials have been suggested as a new platform for quantum optics and quantum information uses and applications, and several pioneering experiments have already been carried out with single photons. This thesis describes our upcoming paper in Science Magazine, where we show how we employ a dielectric metasurface to generate entanglement between spin and orbital angular momentum of single photons and pairs of photons. We demonstrate experimentally the generation of all of the four Bell states by utilizing the geometric phase arising from the photonic spin orbit interaction, and subsequently show nonlocal correlations between two photons which interacted with the metasurface. These are the first experiments where entangled photon states are generated by a metasurface, thus paving the way to the new area of quantum metamaterials.