Related Experiment Video
Updated: Sep 16, 2025

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Chiral Single Photon Routing via Cavity-Assisted Spin-Momentum Locking
Mujie Rao1, Jiawei Yang1, Changkun Song1
1State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, School of Physics, Sun Yat-Sen University, Guangzhou 510006, China.
None:
Chiral quantum interfaces are a compelling platform for the mapping of spin to path, offering innovative strategies for chiral single photon routing. Glide-plane photonic crystal waveguide (GPW) embedded with quantum dots (QDs) enables both Purcell enhancement and chiral coupling, making it a promising candidate for chiral quantum interfaces. However, the continuous band structure in the GPW enables the chiral quantum interface that radiates bidirectionally. Here, we demonstrate a unidirectional chiral quantum interface through the coupling of an InAs QD to the spin-locking mode of a single-mode GaAs microring resonator. This chiral coupling enables dynamic control over the emission direction and spin of the QD through modulation of the magnetic field. The interface exhibits a near-unity field-independent cavity-assisted chiral contrast, a Purcell factor of 1.58 and a single-photon purity of g2(0) = 0.0795 ± 0.009. This capability significantly expands the application scope of chiral quantum optics and develops scalable networks based on chiral quantum photonics.
More Related Videos
09:00Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
12:57Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Related Concept Videos
NMR Spectroscopy: Spin–Spin Coupling
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
Spin–Spin Coupling: One-Bond Coupling
Atomic Nuclei: Nuclear Relaxation Processes
Atomic Nuclei: Nuclear Spin State Overview