Dark Exciton Preparation in a Quantum Dot by a Longitudinal Light Field Tuned to Higher Exciton States
arXiv:2003.03205 · doi:10.1103/PhysRevResearch.3.013024
Abstract
Several important proposals to use semiconductor quantum dots in quantum information technology rely on the control of the dark exciton ground states, such as dark exciton based qubits with a s life time. In this paper, we present an efficient way to occupy the dark exciton ground state by a single short laser pulse. The scheme is based on an optical excitation with a longitudinal field component featured by, e.g., radially polarized beams or certain Laguerre-Gauss or Bessel beams. Utilizing this component, we show within a configuration interaction approach that high-energy exciton states composed of light-hole excitons and higher dark heavy-hole excitons can be addressed. When the higher exciton relaxes, a dark exciton in its ground state is created.
References in corpus (19)
- Electron spin relaxation by nuclei in semiconductor quantum dots
- Quantum-Information Processing with Semiconductor Macroatoms
- Deterministic Generation of a Cluster State of Entangled Photons
- Semiconductor quantum dots as an ideal source of polarization entangled photon pairs on-demand: a review
- Twisted-ligth--ion interaction: the role of longitudinal fields
- Exciton spin-flip rate in quantum dots determined by a modified local density of optical states
- Determinisitic Writing and Control of the Dark Exciton Spin using Short Single Optical Pulses
- Polaron relaxation in self-assembled quantum dots: Breakdown of the semi-classical model
- Deterministically Fabricated Solid-State Quantum-Light Sources
- Enhanced Strong Interaction between Nanocavities and p-shell Excitons Beyond the Dipole Approximation
- Atomistic theory of dark excitons in self-assembled quantum dots of reduced symmetry
- Formulation of the twisted-light--matter interaction at the phase singularity: the twisted-light gauge
- In-plane radiative recombination channel of a dark exciton in self-assembled quantum dots
- Light-hole transitions in quantum dots: realizing full control by highly focused optical-vortex beams
- Phonon-assisted relaxation and tunneling in self-assembled quantum dot molecules
- Accessing the dark exciton spin in deterministic quantum-dot microlenses
- Direct optical state preparation of the dark exciton in a quantum dot
- Influence of quantum dot geometry on p-shell transitions in differently charged quantum dots
- Dephasing of InAs quantum dot p-shell excitons using two-dimensional coherent spectroscopy