Self-Ordering of Individual Photons in Waveguide QED and Rydberg-Atom
Arrays
- URL: http://arxiv.org/abs/2110.12961v2
- Date: Wed, 23 Feb 2022 14:27:46 GMT
- Title: Self-Ordering of Individual Photons in Waveguide QED and Rydberg-Atom
Arrays
- Authors: Ole A. Iversen and Thomas Pohl
- Abstract summary: We study the propagation of light through an optical waveguide that is chirally coupled to three-level quantum emitters.
We show that the additional laser-coupling to a third emitter state not only permits to control the properties of the bound state but can even eliminate it entirely.
We demonstrate this emerging photon-photon repulsion by analysing the quantum dynamics of multiple photons in large emitter arrays.
- Score: 0.548253258922555
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The scattering between light and individual saturable quantum emitters can
induce strong optical nonlinearities and correlations between individual light
quanta. Typically, this leads to an effective attraction that can generate
exotic bound states of photons, which form quantum mechanical precursors of
optical solitons, as found in many optical media. Here, we study the
propagation of light through an optical waveguide that is chirally coupled to
three-level quantum emitters. We show that the additional laser-coupling to a
third emitter state not only permits to control the properties of the bound
state but can even eliminate it entirely. This makes it possible to turn an
otherwise focussing nonlinearity into a repulsive photon-photon interaction. We
demonstrate this emerging photon-photon repulsion by analysing the quantum
dynamics of multiple photons in large emitter arrays and reveal a dynamical
fragmentation of incident uncorrelated light fields and self-ordering into
regular trains of single photons. These striking effects expand the rich
physics of waveguide quantum electrodynamics into the domain of repulsive
photons and establish a conceptually simple platform to explore optical
self-organization phenomena at the quantum level. We discuss implementations of
this setting in cold-atom experiments and propose a new approach based on
arrays of mesoscopic Rydberg-atom ensembles.
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