Excitation spectrum of a multilevel atom coupled with a dielectric nanostructure

Abstract

We develop a microscopic calculation scheme for the excitation spectrum of a single-electron atom localized near a dielectric nanostructure. The atom originally has an arbitrary degenerate structure of its Zeeman sublevels on its closed optical transition and we follow how the excitation spectrum would be modified by its radiative coupling with a mesoscopicaly small dielectric sample of arbitrary shape. The dielectric medium is modeled by a dense ensemble of $V$-type atoms having the same dielectric permittivity near the transition frequency of the reference atom. Our numerical simulations predict strong coupling for some specific configurations and then suggest promising options for quantum interface and quantum information processing at the level of single photons and atoms. In particular, the strong resonance interaction between atom(s) and light, propagating through a photonic crystal waveguide, justifies as realistic the scenario of a signal light coupling with a small atomic array consisting of a few atoms. As a potential implication, the directional one-dimensional resonance scattering, expected in such systems, could provide a quantum bus by entangling distant atoms integrated into a quantum register.

References in corpus (32)

• The Quantum Internet
• Chiral Quantum Optics
• Quantum interface between light and atomic ensembles
• Many-Body Physics with Individually-Controlled Rydberg Atoms
• Cold atoms in cavity-generated dynamical optical potentials
• Optical interface created by laser-cooled atoms trapped in the evanescent field surrounding an optical nanofiber
• Demonstration of multi-qubit entanglement and algorithms on a programmable neutral atom quantum computer
• Atom-Light Interactions in Photonic Crystals
• Demonstration of a state-insensitive, compensated nanofiber trap
• Atom waveguide using a two-color evanescent light field around a subwavelength-diameter optical fiber
• Atom-atom interactions around the band edge of a photonic crystal waveguide
• Large Bragg Reflection from One-Dimensional Chains of Trapped Atoms Near a Nanoscale Waveguide
• Coherent backscattering of light off one-dimensional atomic strings
• Symmetry Breaking in Photonic Crystals: On-Demand Dispersion from Flatband to Dirac Cones
• Strong coupling of two individually controlled atoms via a nanophotonic cavity
• Optical nanofibres and neutral atoms
• Single Atoms on an Optical Nanofiber
• Coupling a single trapped atom to a whispering-gallery-mode microresonator
• Collective radiative dynamics of an ensemble of cold atoms coupled to an optical waveguide
• Light scattering and localization in an ultracold and dense atomic system
• Spontaneous emission rate of an excited atom placed near a nanofiber
• Atomic spin-controlled non-reciprocal Raman amplification of fibre-guided light
• Mesoscopic coherence in light scattering from cold, optically dense and disordered atomic systems
• Imaging and localizing individual atoms interfaced with a nanophotonic waveguide
• An advanced apparatus for the integration of nanophotonics and cold atoms
• Single collective excitation of an atomic array trapped along a waveguide: a study of cooperative emission for different atomic chain configurations
• Light Scattering From an Atomic Array Trapped Near a One-Dimensional Nanoscale Waveguide: a Microscopic Approach
• Observation of modified radiative properties of cold atoms in vacuum near a dielectric surface
• Dynamics of a spin qubit in an optical dipole trap
• Nanotrappy: An open-source versatile package for cold-atom trapping close to nanostructures
• Asymmetric comb waveguide for strong interactions between atoms and light
• Quantum interface between light and a one-dimensional atomic system