Microresonators articles from across Nature Portfolio

CMOS wafer scale manufactured chiral exceptional point non-Hermitian modulators were demonstrated through AIM photonics. This enables GHz-speed asymmetric electro-optic modulation with 17 dB contrast using CMOS-compatible voltages.

The optical nature of exciton-polaritons enables new types of devices that leverage coherent quantum effects. Here the authors demonstrate a ring-shaped Josephson junction on a solid-state exciton-polariton platform, addressing challenges in generating polariton currents and providing optical access to the quantum phase. This advancement brings new possibilities for integrating the Josephson effect into photonic circuitry.

Thin film interference is integral to modern photonics; however, it inevitably leads to an undesired change of spectral characteristics with angle. Here, the authors overcome this fundamental limit by utilizing and tuning exciton-polaritons arising in ultra-strongly coupled microcavities.

The authors demonstrate electrically pumped continuous-wave operation of a SiGeSn/GeSn lasers. The devices are based on a multi-quantum-well design in a small footprint micro-disk cavity resulting in driving parameters compatible with on-chip operation.

Parity-Time symmetric micro-resonators utilizing nonlinear four-wave mixing, now surpass the bandwidth-efficiency limit for optical signal processing, achieving a remarkable 100-fold efficiency boost.

Combining photoacoustic excitation with optomechanics enables the mechanical modes associated with entire microorganisms to be detected, demonstrating that mechanical spectroscopy allows us to identify microorganisms and characterize their life stages.

The hardest barrier in the way to topological control over light with magnetic fields is extremely weak magneto-optic coupling. Now, strong light-matter coupling in an optical cavity has been used to reach record energy splitting values for photonic spins in magnetic fields. This is a potential game changer for topological photonics.

A micropillar cavity that can impart a phase shift to single photons offers a promising route to scalable quantum information processing with light.

Giant exciton–polaritons come to the scene from a thin Cu₂O crystal sandwiched by a microcavity. Their anticipated strong interactions may facilitate the development of a promising Rydberg solid-state platform for quantum technologies.