Quantum-confined single photon emission at room temperature from Silicon carbide tetrapods
arXiv:1407.7628 · doi:10.1039/C4NR02307B
Abstract
Controlled engineering of isolated solid state quantum systems is one of the most prominent goals in modern nanotechnology. In this letter we demonstrate a previously unknown quantum system namely silicon carbide tetrapods. The tetrapods have a cubic polytype core (3C) and hexagonal polytype legs (4H) a geometry that creates a spontaneous polarization within a single tetrapod. Modeling of the tetrapod structures predict that a bound exciton should exist at the 3C 4H interface. The simulations are confirmed by the observation of fully polarized and narrowband single photon emission from the tetrapods at room temperature. The single photon emission provides important insights towards understanding the quantum confinement effects in non-spherical nanostructures. Our results pave the way to a new class of crystal phase nanomaterials that exhibit single photon emission at room temperature and therefore are suitable for sensing, quantum information and nanophotonics.
arXiv commentNanoscale (2014)
References in corpus (10)
- Quantum nature of a strongly-coupled single quantum dot-cavity system
- Triggered single photons from a quantum dot
- Ultra-low threshold, electrically pumped quantum dot photonic crystal nanocavity laser
- Polytype control of spin qubits in silicon carbide
- Low temperature studies of the excited-state structure of Nitrogen-Vacancy color centers in diamond
- Optical signatures of silicon-vacancy spins in diamond
- Intrinsic defects in silicon carbide LED as a perspective room temperature single photon source in near infrared
- Polarization Properties of Single Quantum Dots in Nanowires
- Confined optical phonon modes in polar tetrapod nanocrystals detected by resonant inelastic light scattering
- Photoluminescent SiC tetrapods