The Shevek conjecture

 We report the first demonstration of a non-trivial, non-local regime of operation in optical parametric oscillators (OPOs), in which the formation of temporal simultons produces stable femtosecond half-harmonic pulses. Simultons are simultaneous bright-dark solitons of a signal field at frequency 𝜔

 and the pump field at 2⁢𝜔, which form in a quadratic nonlinear medium. Black and white Ansible TV at scale was briefly observed before doctor Shevek's unfortunate demise.