Chiral light-matter interactions in hot vapor cladded waveguides

Abstract

Recently, there is growing interest in integrating alkali vapors with nanoscale photonic structures, such as nano-waveguides, resonators and nanoantennas. Nanoscale confinement of electromagnetic fields may introduce a longitudinal electric field component, giving rise to circularly polarized modes which are essential for diverse applications involving vapor and light, such as chirality and non-reciprocity. Hereby, we have designed, fabricated and characterized a miniaturized vapor cell that is integrated with optical waveguides that are designed to generate a peculiar circular-like polarization. Taking advantage of this phenomenon, we demonstrate a spectral shift in the atomic absorption signatures at varying magnetic fields, and significant isolation between forward and backward propagating waves in our atomic-cladded waveguide. Our results pave the way for the utilization of chip-scale integrated atomic devices in applications such as optical isolation and high spatial resolution magnetometry.

References in corpus (6)

• Chiral Quantum Optics
• All-Optical Routing of Single Photons by a One-Atom Switch Controlled by a Single Photon
• Low-Light-Level Optical Interactions with Rubidium Vapor in a Photonic Bandgap Fiber
• Evanescent light-matter Interactions in Atomic Cladding Wave Guides
• An optical isolator using an atomic vapor in the hyperfine Paschen-Back regime
• Observation of two-photon absorption at low power levels using tapered optical fibers in rubidium vapor