Unidirectional coupling of a quantum emitter to a subwavelength grating waveguide with engineered stationary inflection point
arXiv:2108.07540 · doi:10.1103/PhysRevB.104.245408
Abstract
In this work, we propose an approach for the design of a waveguide structure that allows for efficient and highly asymmetric coupling of the quantum sources with circularly polarized transition dipole moments to the guided mode of the structure. The approach is based on the mixing of the two quasi-degenerate modes of a periodic waveguide with an auxiliary single-mode waveguide leading to the formation of the dispersion with a stationary inflection point and consequently to the high coupling efficiency of this mode with a dipole source. We show that the distribution of the field polarization inside the waveguide is relatively homogeneous maintaining the circular polarization in a large area. Consequently, this leads to a high degree of tolerance of the coupling asymmetry and strength to the position of the quantum emitter. We believe, that our results will extend the variety of designs of the efficient chiral nanophotonic interfaces based on planar semiconductor nanostructures.
arXiv commentMain text: 20 pages, 5 figures; Supporting information: 13 pages, 5 figures
References in corpus (21)
- Chiral Quantum Optics
- Interfacing single photons and single quantum dots with photonic nanostructures
- Deterministic photon-emitter coupling in chiral photonic circuits
- All-Optical Routing of Single Photons by a One-Atom Switch Controlled by a Single Photon
- Quantum optical circulator controlled by a single chirally coupled atom
- Chirality of nanophotonic waveguide with embedded quantum emitter for unidirectional spin transfer
- Strong coupling between single atoms and non-transversal photons
- Optical diode based on the chirality of guided photons
- Polarization engineering in photonic crystal waveguides for spin-photon entanglers
- Chiral topological photonics with an embedded quantum emitter
- Chiral quantum optics using a topological resonator
- Spin-photon interface and spin-controlled photon switching in a nanobeam waveguide
- Theory of Coupled Resonator Optical Waveguides (CROW) Exhibiting High Order Exceptional Points of Degeneracy
- Enhancement and Inhibition of Spontaneous Photon Emission by Resonant Silicon Nanoantennas
- Demonstration of the enhanced Purcell factor in all-dielectric structures
- A Semiconductor Topological Photonic Ring Resonator
- Deterministic positioning of nanophotonic waveguides around single self-assembled quantum dots
- Topological states in arrays of optical waveguides engineered via mode interference
- Numerical modelling of the coupling efficiency of single quantum emitters in photonic-crystal waveguides
- All-optical switching and unidirectional plasmon launching with electron-hole plasma driven silicon nanoantennas
- Non-Reciprocal Transmission and Reflection of a Chirally-Coupled Quantum Dot