Systematic design of a robust half-W1 photonic crystal waveguide for interfacing slow light and trapped cold atoms

Abstract

Novel platforms interfacing trapped cold atoms and guided light in nanoscale waveguides are a promising route to achieve a regime of strong coupling between light and atoms in single pass, with applications to quantum non-linear optics and quantum simulation. A strong challenge for the experimental development of this emerging waveguide-QED field of research is to combine facilitated optical access for atom transport, atom trapping via guided modes and robustness to inherent nanofabrication imperfections. In this endeavor, here we propose to interface Rubidium atoms with a photonic-crystal waveguide based on a large-index GaInP slab. With a specifically tailored half-W1 design, we show that a large chiral coupling to the waveguide can be obtained and guided modes can be used to form two-color dipole traps for atoms at 116~nm from the edge of the structure. This optimized device should greatly improve the level of experimental control and facilitate the atom integration.

References in corpus (16)

• Chiral Quantum Optics
• Subwavelength vacuum lattices and atom-atom interactions in photonic crystals
• The Casimir effect within scattering theory
• Photonic-crystal slabs with a triangular lattice of triangular holes investigated using a guided-mode expansion method
• Effect of the Casimir-Polder force on the collective oscillations of a trapped Bose-Einstein condensate
• Demonstration of a memory for tightly guided light in an optical nanofiber
• Engineering chiral light--matter interaction in photonic crystal waveguides with slow light
• Dynamical photon-photon interaction mediated by a quantum emitter
• Observation of large spontaneous emission rate enhancement of quantum dots in a broken-symmetry slow-light waveguide
• Spin many-body phases in standard and topological waveguide QED simulators
• Perfect Chirality with imperfect polarisation
• Proposal for stable atom trapping on a GaN-on-Sapphire chip
• Pairwise summation approximation for Casimir potentials and its limitations
• Creation of non-classical states of light in a chiral waveguide
• Nanotrappy: An open-source versatile package for cold-atom trapping close to nanostructures
• Asymmetric comb waveguide for strong interactions between atoms and light

Cited by in corpus (5)

• Dipole-dipole interactions mediated by a photonic flat band
• Topological photon pumping in quantum optical systems
• Nonradiant multiphoton states in quantum ring oligomers
• Light-induced, fictitious magnetic trapping of cold alkali atoms using an optical tweezers-nanofiber hybrid platform
• Superbunching from coherently driven atoms in a waveguide