Nanophotonic Architectures for Quantum Control of Light Emission
Abstract
Active hybrid nanophotonic structures are the key building block components for future nanophotonic networks, and can enable dynamical control of light emission. In this theory-guided experimental effort, we created novel tunable antenna-emitter hybrid structures to manipulate all of the key constitutive properties, including the intensity, propagation direction, and polarization of emitted photons. Active emission control was achieved by incorporating either materials with tunable refractive index (ITO, VO2, etc.) into the nanophotonic structures in the vicinity of photon emitters. In 2019, we proposed and experimentally demonstrated the design of tunable nanophotonic structures, including electrically-tunable 3-4 multiple-quantum-well-based metasurfaces and VO2 based metasurfaces and their ability to achieve dynamic control of light (amplitude, phase, deflected angle, etc.). This past year, we designed and realized a multifunctional metasurface that enables active switching of optical functionality. An ITO-based active metasurface operating at the epsilon-near-zero condition was also developed to dynamically control the polarization state of reflected light in near-infrared. The polarization converter can realize three polarization states (linear, circular and elliptical) under a fixed incident polarization condition. We also reported results on quantum emitters, including experimental characterization of exfoliated hexagonal boron nitride (hBN)flakes, relating structure and quantum light emission properties. We identified single emitters at the surface of a hBN flake, and performed a clean g(2) measurement that shows a correlation dip at short delays. Additionally, high index dielectric TiO2 based metasurface were designed to support strong Mie resonances at the wavelengths for photon emission from hBN emitters, enabling the control of photon emission via antenna-emitter interaction.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 2023
- Accession Number
- AD1226801
Entities
People
- Harry Atwater
- Pin-chieh Wu
Organizations
- California Institute of Technology
- National Cheng Kung University