Phys.org  June 18, 2024 The lack of nonlinearity in photonics has led to encoded measurement-based quantum computing, which relies on linear operations but requires access to resourceful (’nonlinear’) quantum states. In contrast, superconducting microwave circuits offer engineerable nonlinearities but suffer from static Kerr nonlinearity. An international team of researchers (Sweden, Germany) demonstrated universal control of a bosonic mode composed of a superconducting nonlinear asymmetric inductive element (SNAIL) resonator, enabled by native nonlinearities in the SNAIL element. They suppressed static nonlinearities and dynamically activated nonlinearities up to third order by fast flux pulses. They experimentally realized a universal set of generalized […]