We demonstrate attosecond-resolved generation and control of ultrafast squeezed light via four-wave mixing, directly measuring quantum uncertainty dynamics in real time and enabling petahertz-scale secure communication, advancing ultrafast quantum optics and technologies.

Transition from one bound state in the continuum to exceptional ring and optical-pump-controlled such exceptional point switching demonstrated in terahertz metasurfaces.

This work reports on a new concept of time-resolved photon counting Fourier-transform micro-spectroscopy, allowing continuous scanning by converting photon arrival times to interferometer position.

[110]-oriented GaAs quantum optical metasurfaces enable enhanced spontaneous parametric down-conversion and two-photon interference, advancing scalable and multifunctional platforms for entangled photon generation in quantum technologies.

This work introduces an optofluidic photoacoustic sensor enabling highly-sensitive, label-free, baseline-free detection of freely flowing particles and cells without surface binding or immobilization, offering robust, real-time analysis in complex media.

Topology-engineered upconversion nanoparticles enable low-power STED microscopy by optimizing energy transfer and cross-relaxation, achieving sub-diffraction resolution with significantly reduced excitation and depletion intensities for efficient super-resolution imaging.

We demonstrate time-resolved resonant magnetic X-ray scattering employing soft-X-ray radiation emitted from a laser-driven plasma source for tracking the reorganisation of magnetic domains on pico- to nanosecond time scales.