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Updated: Sep 15, 2025
07:56
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
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Fractional-statistics-induced entanglement from Andreev-like tunneling.
Gu Zhang1,2,3, Pierre Glidic4,5, Frédéric Pierre4
1National Laboratory of Solid State Microstructures, School of Physics, Jiangsu Physical Science Research Center, Nanjing University, Nanjing, 210093, China.
Nature Communications
|July 16, 2025
Summary
Entanglement is generated between anyonic subsystems through electron tunneling, even without direct braiding. This finding connects anyonic physics to quantum information platforms and entanglement generation via fractional statistics.
Area of Science:
- Topological quantum computation
- Quantum information science
- Condensed matter physics
Background:
- Anyonic statistics are fundamental to topological quantum techniques.
- Detecting anyons has advanced, but their connection to quantum information, specifically entanglement generation via braiding, remains underexplored.
- Understanding entanglement in anyonic systems is crucial for developing robust quantum technologies.
Purpose of the Study:
- To demonstrate entanglement generation between anyonic subsystems connected solely by electron tunneling.
- To explore the link between anyonic braiding and entanglement in quantum information platforms.
- To introduce a method for quantifying entanglement associated with fractional statistics.
Main Methods:
- Utilizing a platform where fractional quantum Hall edges are bridged by a quantum point contact allowing only fermion transmission (Andreev-like tunneling).
- Implementing an anyonic Hong-Ou-Mandel collider setup to study two-beam collisions.
- Defining and applying an entanglement pointer based on current noise to quantify entanglement.
Main Results:
- Entanglement is generated between anyonic subsystems connected by electron tunneling, manifesting fractional statistics.
- The study successfully demonstrates anyon-quasihole braiding.
- The entanglement pointer effectively quantifies entanglement linked to quasiparticle fractional statistics.
Conclusions:
- Entanglement can be induced by anyonic statistics and braiding, even through indirect connections like electron tunneling.
- This work bridges the gap between anyonic physics and quantum information, offering new avenues for entanglement generation.
- The findings pave the way for exploring entanglement induced by non-Abelian statistics in future quantum technologies.
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