# Non-inverse dynamics of a quantum emitter coupled to a fully anisotropic environment

## TL;DR

This paper explores how a fully anisotropic nanostructure influences quantum emitter dynamics, revealing a new control mechanism for light emission and emitter transition probing through anisotropy and orientation effects.

## Contribution

It introduces the concept of non-inverse dynamics in quantum emitters coupled to anisotropic environments, highlighting the role of anisotropy and tilt in controlling quantum transitions.

## Key findings

- Anisotropic metasurfaces induce non-symmetric transition dynamics.
- Tilt of the emitter affects spectral and temporal emission profiles.
- New control mechanism for quantum light emission and probing.

## Abstract

Anisotropic nanophotonic structures can couple the levels of a quantum emitter through the quantum interference effect. In this paper we study the coupling of quantum emitters excited states through the modes of a fully anisotropic structure: a structure for which all directions are physically nonequivalent. We consider an anisotropic metasurface as an illustrative example of such a structure. We point out a novel degree of freedom in controlling the temporal dynamics and spectral profiles of quantum emitters: namely, we show that a combination of the metasurface anisotropy and tilt of the emitter quantization axis with respect to the metasurface normal results in nonsymmetric dynamics between the transitions of electrons from left-circular state to the right-circular states and the inverse process. Our findings give an additional mechanism for control over the light emission by quantum systems and, vice versa, can be utilized for probing active transitions of quantum emitters.