Related Experiment Video
Updated: Jun 30, 2025

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
Spin-controlled topological phase transition in non-Euclidean space.
Zhuochen Du1, Jinze Gao1, Qiuchen Yan2
1State Key Laboratory for Mesoscopic Physics and Department of Physics, Collaborative Innovation Center of Quantum Matter and Frontiers Science Center for Nano-Optoelectronics, Beijing Academy of Quantum Information Sciences, Peking University, Beijing, 100871, China.
Researchers explored spin-controlled topological phase transitions in non-Euclidean space using Möbius rings. This work demonstrates controlling topological edge and bulk states with circularly polarized light.
Area of Science:
- Condensed matter physics
- Quantum optics
- Topological photonics
Background:
- Topological phase transitions are well-studied in Euclidean systems like photonic crystals.
- Spin-controlled transitions in non-Euclidean geometry remain unexplored.
Purpose of the Study:
- To propose and demonstrate a novel non-Euclidean configuration for spin-controlled topological phase transitions.
- To investigate the transition between topological edge and bulk states using Möbius rings.
Main Methods:
- Designed an 8π periodic Möbius ring with adiabatic evolution of its cross-section.
- Constructed a Su-Schrieffer-Heeger configuration using these rings.
- Utilized circularly polarized light to excite and control topological states.
Main Results:
- Demonstrated spin-locked mode conversion (transverse electric to transverse magnetic) within the Möbius ring.
- Achieved controlled transition between topological edge and bulk states via polarization.
- Showed feasibility for both Hermitian and non-Hermitian 2D systems.
Conclusions:
- Introduced a new method for controlling topological photonic states using spin and non-Euclidean geometry.
- Opened avenues for tuning topological phases in non-Euclidean spaces.
- Highlighted the potential of Möbius rings in topological photonics.
More Related Videos
09:06Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
05:39Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
Related Concept Videos
Phase Transitions
Phase Transitions: Melting and Freezing
Phase Transitions: Sublimation and Deposition
Phase Transitions: Vaporization and Condensation
Transformation of Plane Strain
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
Rotation of Asymmetric Top
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...