Optically Tunable Entangled Photon State Generation in a Nonlinear Directional Coupler
Frank Setzpfandt, Alexander S. Solntsev, James Titchener, Che Wen Wu, Chunle Xiong, Thomas Pertsch, Roland Schiek, Dragomir N. Neshev, Andrey A. Sukhorukov · Nonlinear Optics · 2015
We propose and experimentally demonstrate an all-optically tunable biphoton quantum light source using a nonlinear directional coupler. The source can generate high-fidelity N00N states, completely split states, and states with variable degrees of entanglement.