# Gravitational dephasing in spontaneous emission of atomic ensembles in timed Dicke states

## TL;DR

This paper investigates how a weak gravitational field causes dephasing in atomic ensembles in timed Dicke states, affecting their collective emission pattern and broadening the angular distribution of emitted photons.

## Contribution

It introduces the concept of gravitationally induced dephasing in collective atomic emission and analyzes its impact on emission directionality in timed Dicke states.

## Key findings

- Gravity causes broadening of emission angular distribution.
- Photon emission directionality is altered by gravitational dephasing.
- Dephasing effect depends on gravitational field strength.

## Abstract

Here we discuss an effect of dephasing induced by a weak gravitational field on the collective radiation dynamics of an atomic system in timed single-photon Dicke states. We show that a photon absorbed by the stationary system of randomly placed stationary atoms is no longer spontaneously emitted in the direction of the impinging photon. Gravity leads to broadening of the angular distribution of emission.