Phys.org  February 28, 2024 Due to the current technological limitations understanding and controlling engineered quantum systems is not always possible. An international team of researchers (Australia, Switzerland, UK, Germany, France, USA – Perdue University) has developed a programmable waveguide array in which the Hamiltonian terms can be individually electro-optically tuned to implement various Hamiltonian continuous-time evolutions on a single device. They used a single array with 11 waveguides in lithium niobate, controlled via 22 electrodes, to perform a range of experiments that realized the Su-Schriffer-Heeger model, the Aubrey-Andre model, and Anderson localization, which is equivalent to over 2500 static devices. […]