Author(s): Alexander K. Stoychev, Ulrich Kuhl, and Nicolas Noiray Wave transmission reciprocity is broken by exploiting the synchronization of two coupled self-oscillators. The underlying principle is that illumination from one port drives the in phase, while illumination from the other port drives the antiphase synchronization state. Because of its self-adjustmen… [Phys. Rev. Lett. 137, 033802] Published Thu Jul 16, 2026