Deterministic single-atom source of quasi-superradiant $N$-photon pulses

TL;DR

This paper introduces a deterministic single-atom cavity QED system capable of generating on-demand multi-photon pulses, including number states and binomial-code states, using Raman transitions in a fiber-integrated micro- or nano-cavity setup.

Contribution

It presents a novel scheme utilizing Raman transitions and detuned laser and cavity fields to produce specific quantum light states with a single atom in a cavity.

Findings

Enables on-demand generation of optical number and binomial-code states.

Reduces complex dynamics to a simple Tavis-Cummings model.

Compatible with fiber-integrated micro- and nano-cavity setups.

Abstract

We propose a single-atom, cavity quantum electrodynamics system, compatible with recently demonstrated, fiber-integrated micro- and nano-cavity setups, for the on-demand production of optical number-state, $0N$-state, and binomial-code-state pulses. The scheme makes use of Raman transitions within an entire atomic ground-state hyperfine level and operates with laser and cavity fields detuned from the atomic transition by much more than the excited-state hyperfine splitting. This enables reduction of the dynamics to that of a simple, cavity-damped Tavis-Cummings model with the collective spin determined by the total angular momentum of the ground hyperfine level.