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Updated: Apr 15, 2026
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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Open-system dynamics of entanglement: a key issues review
Leandro Aolita1, Fernando de Melo, Luiz Davidovich
1Dahlem Center for Complex Quantum Systems, Freie Universität Berlin, 14195 Berlin, Germany.
Summary
Controlling many-body entanglement in open quantum systems is key for quantum technologies. This review explores how noise affects entanglement dynamics, revealing diverse behaviors and potential control strategies for quantum computing and communication.
Area of Science:
- Quantum Information Science
- Quantum Technologies
- Quantum Foundations
Background:
- Controlling multi-particle quantum systems is a major challenge for quantum technologies.
- Many-body entanglement is a crucial resource for quantum speed-ups but is vulnerable to environmental noise.
Purpose of the Study:
- To provide an overview of theoretical and experimental research on the dynamics of entanglement in open quantum systems.
- To analyze how environmental interactions influence entanglement evolution and explore control strategies.
Main Methods:
- Surveying recent theoretical and experimental efforts on entanglement dynamics under noise.
- Analyzing various scenarios of entangled states and environments.
- Summarizing theoretical results and experimental findings on local vs. global decoherence.
Main Results:
- Entanglement can decay at a finite time, unlike single-particle quantities.
- Some entanglement classes decay exponentially with particle number under local noise, while others are robust.
- Diverse dynamical behaviors of entanglement are observed depending on the system and environment.
Conclusions:
- Understanding and controlling entanglement dynamics in open systems is vital for advancing quantum computing, simulations, communication, and metrology.
- Noise significantly impacts entanglement, necessitating the development of control and robustness-enhancement techniques.
- This work offers a broad perspective on entanglement dynamics for researchers in quantum information and related fields.
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