Room-temperature single photon emission from micron-long air-suspended carbon nanotubes

Abstract

Statistics of photons emitted by mobile excitons in individual carbon nanotubes are investigated. Photoluminescence spectroscopy is used to identify the chiralities and suspended lengths of air-suspended nanotubes, and photon correlation measurements are performed at room temperature on telecommunication-wavelength nanotube emission with a Hanbury-Brown-Twiss setup. We obtain zero-delay second-order correlation $g^{(2)}(0)$ less than 0.5, indicating single photon generation. Excitation power dependence of the photon antibunching characteristics is examined for nanotubes with various chiralities and suspended lengths, where we find that the minimum value of $g^{(2)}(0)$ is obtained at the lowest power. The influence of exciton diffusion and end quenching is studied by Monte Carlo simulations, and we derive an analytical expression for the minimum value of $g^{(2)}(0)$. Our results indicate that mobile excitons in micron-long nanotubes can in principle produce high-purity single photons, leading to new design strategies for quantum photon sources.

7 pages, 4 figures

References in corpus (9)

• Photonic quantum technologies
• Exciton binding energies in carbon nanotubes from two-photon photoluminescence
• Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube
• Ultralow mode-volume photonic crystal nanobeam cavities for high efficiency coupling to individual carbon nanotube emitters
• Exciton diffusion in air-suspended single-walled carbon nanotubes
• Exciton diffusion, end quenching, and exciton-exciton annihilation in individual air-suspended carbon nanotubes
• Single photon emission from ZnO nanoparticles
• Influences of Exciton Diffusion and Exciton-Exciton Annihilation on Photon Emission Statistics of Carbon Nanotubes
• Existence of an upper limit on the density of excitons in carbon nanotubes by diffusion-limited exciton-exciton annihilation: Experiment and theory

Cited by in corpus (11)

• Nanomaterials for Quantum Information Science and Engineering
• Luminescent Defects in Single-Walled Carbon Nanotubes for Applications
• Formation of Organic Color Centers in Air-Suspended Carbon Nanotubes Using Vapor-Phase Reaction
• Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures
• Resonant exciton transfer in mixed-dimensional heterostructures for overcoming dimensional restrictions in optical processes
• Super-Resolution Fluorescence Imaging of Carbon Nanotubes Using a Nonlinear Excitonic Process
• Near-unity radiative quantum efficiency of excitons in carbon nanotubes
• Quantum emission assisted by energy landscape modification in pentacene-decorated carbon nanotubes
• Waveguide coupled cavity-enhanced light emission from individual carbon nanotubes
• Intrinsic process for upconversion photoluminescence via $K$-momentum phonon coupling in carbon nanotubes
• Deterministic Formation of Single Organic Color Centers in Single-Walled Carbon Nanotubes