Proposal for stable atom trapping on a GaN-on-Sapphire chip

Abstract

The hybrid photon-atom integrated circuits, which include photonic microcavities and trapped single neutral atom in their evanescent field, are of great potential for quantum information processing. In this platform, the atoms provide the single-photon nonlinearity and long-lived memory, which are complementary to the excellent passive photonics devices in conventional quantum photonic circuits. In this work, we propose a stable platform for realizing the hybrid photon-atom circuits based on an unsuspended photonic chip. By introducing high-order modes in the microring, a feasible evanescent-field trap potential well $\sim 0.3\mathrm{mK}$ could be obtained by only $10\mathrm{mW}$-level power in the cavity, compared with $100\mathrm{mW}$-level power required in the scheme based on fundamental modes. Based on our scheme, stable single atom trapping with relatively low laser power is feasible for future studies on high-fidelity quantum gates, single-photon sources, as well as many-body quantum physics based on a controllable atom array in a microcavity.

8 pages, 6 figures

References in corpus (11)

• The Quantum Internet
• Photonics for artificial intelligence and neuromorphic computing
• Nanophotonic quantum phase switch with a single atom
• All-Optical Routing of Single Photons by a One-Atom Switch Controlled by a Single Photon
• Nonlinear pi phase shift for single fiber-guided photons interacting with a single atom
• Exploiting Ultralow Loss Multimode Waveguides for Broadband Frequency Combs
• Compact chip-scale guided cold atom gyrometers for inertial navigation: Enabling technologies and design study
• GaN directional couplers for integrated quantum photonics
• High-frequency traveling-wave phononic cavity with sub-micron wavelength
• Two-color atom guide and 1D optical lattice using evanescent fields of high-order transverse modes
• Characterization of Suspended Membrane Waveguides towards a Photonic Atom Trap Integrated Platform

Cited by in corpus (2)

• Systematic design of a robust half-W1 photonic crystal waveguide for interfacing slow light and trapped cold atoms
• Proposal of a free-space-to-chip pipeline for transporting single atoms