# Nanoscale ultrafast camera unveils light-matter dynamics in real time and space

## TL;DR

A new ultrafast camera reveals how light interacts with matter at the nanoscale in real time.

## Contribution

The integration of ultrafast spectroscopy with scanning probe microscopy enables visualization of femtosecond-scale interactions beyond the diffraction limit.

## Key findings

- The technique allows direct observation of polaritons and quantum states.
- It provides insights into nonequilibrium dynamics in low-dimensional quantum materials.

## Abstract

Ultrafast tip-based microscopy has evolved to meet three critical parameters in optical characterization: spatial, spectral, and temporal resolution. This advancement provides deep insights into light-matter interactions in both real time and real space. In particular, it allows direct observation of polaritons, quantum states, and nonequilibrium dynamics, especially in low-dimensional quantum materials.

The integration of ultrafast spectroscopy with scanning probe microscopy realizes direct visualization of femtosecond-scale light-matter interactions beyond the diffraction limit.