TY - JOUR AU - García Escartín, Juan Carlos AU - Gimeno, Vicent AU - Moyano Fernández, Julio José PY - 2021 SN - 1570-0755 UR - https://uvadoc.uva.es/handle/10324/49050 AB - Linear optical systems acting on photon number states produce many interesting evolutions, but cannot give all the allowed quantum operations on the input state. Using Toponogov’s theorem from differential geometry, we propose an iterative... LA - eng PB - Springer KW - Optical implementations of quantum evolutions KW - Quantum optics KW - Toponogov’s Theorem TI - Optimal approximation to unitary quantum operators with linear optics DO - 10.1007/s11128-021-03254-2 ER -