# Particlelike scattering states in a microwave cavity

## TL;DR

This paper demonstrates the creation of particlelike scattering states in a chaotic microwave cavity, enabling spatially confined communication channels by shaping incident waves based on transmission matrix measurements.

## Contribution

The authors experimentally realize particlelike scattering states in a lossy chaotic cavity using a novel wave shaping method based on the transmission matrix and time-delay formalism.

## Key findings

- Successful generation of particlelike scattering states in microwave cavities
- Potential for secure and obstacle-avoiding wave communication channels
- Implementation of wave shaping using phase and amplitude regulation

## Abstract

We realize scattering states in a lossy and chaotic two-dimensional microwave cavity which follow bundles of classical particle trajectories. To generate such particlelike scattering states we measure the system's transmission matrix and apply an adapted Wigner-Smith time-delay formalism to it. The necessary shaping of the incident wave is achieved in situ using phase and amplitude regulated microwave antennas. Our experimental findings pave the way for establishing spatially confined communication channels that avoid possible intruders or obstacles in wave-based communication systems.