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Updated: Nov 27, 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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Multipartite Entanglement Generation in a Structured Environment
Shijiao Wang1, Xiao San Ma1, Mu-Tian Cheng1
1School of Electric Engineering and Information, Anhui University of Technology, Ma'anshan 243002, China.
Entropy (Basel, Switzerland)
|December 8, 2020
Summary
This study explores multipartite entanglement generation in quantum systems. Stronger coupling and larger systems enhance non-Markovian dynamics, leading to slower, stable entanglement over time.
Area of Science:
- Quantum Information Science
- Condensed Matter Physics
- Quantum Optics
Background:
- Investigating multipartite entanglement generation is crucial for quantum information processing.
- Understanding the dynamics of quantum systems coupled to harmonic oscillators and baths is essential for developing robust quantum technologies.
Purpose of the Study:
- To analyze entanglement generation in a system of n-qubit states coupled to harmonic oscillators and a bath.
- To explore the influence of coupling strengths and system size on multipartite entanglement and non-Markovian dynamics.
Main Methods:
- Theoretical analysis of an n-qubit system coupled to harmonic oscillators and a bath of N additional oscillators.
- Examination of entanglement generation under varying coupling regimes (weak vs. strong) and system parameters.
Main Results:
- Steady multipartite entanglement is generated after long-time evolution, with values dependent on system size.
- Weak coupling leads to monotonic entanglement increase, while strong coupling exhibits speed-up and oscillations due to non-Markovian behavior.
- Stronger coupling and larger bath sizes enhance non-Markovian dynamics, delaying stable entanglement.
Conclusions:
- The study demonstrates tunable entanglement generation through system parameters.
- Non-Markovian effects significantly influence entanglement dynamics, particularly under strong coupling conditions.
- The findings provide insights into designing quantum systems for enhanced entanglement and controlling quantum dynamics.
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