Non-Markovian dynamics and strong coupling between atomic transitions and a waveguide continuum edge

TL;DR

This paper explores non-Markovian dynamics and strong coupling effects between atomic transitions and a waveguide continuum edge, revealing phenomena like vacuum Rabi oscillations and bound polariton states relevant for quantum communication.

Contribution

It introduces schemes for coupling atomic transitions to a waveguide continuum edge, highlighting non-Markovian effects and strong coupling phenomena in quantum systems.

Findings

Demonstration of non-Markovian spin-photon interface

Observation of vacuum Rabi oscillations

Formation of bound polariton states

Abstract

In quantum communication and distributed quantum computing, one-dimensional waveguides provide directional transfer of quantum information. A single-mode waveguide has a density-of-states singularity at the lower cut-off frequency, which resembles sharp resonances of a cavity but with non-Markovian dynamics. Thus we put forward schemes of coupling atomic transitions and a waveguide continuum edge. We first present a scheme of spin-photon quantum interface operating in the non-Markovian regime for a $\Lambda$-type three-level system coupled to a waveguide. Then we show that strong coupling between atomic transitions and a waveguide continuum edge can lead to vacuum Rabi oscillations and bound polariton states.