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Updated: Jun 5, 2026
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Deterministic generation of multiparticle entanglement in a coupled cavity-fiber system
1MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Department of Applied Physics, Xi'an Jiaotong University, Xi'an, China. lipengbo@mail.xjtu.edu.cn
Optics Express
|January 26, 2011
Summary
We demonstrate a novel method for creating multiparticle entanglement between two distant cold atomic clouds. This deterministic quantum entanglement is robust against system losses, paving the way for quantum networks.
Area of Science:
- Quantum Physics
- Atomic Physics
- Quantum Information Science
Background:
- Generating multiparticle entanglement is crucial for quantum information processing.
- Entanglement between distant quantum systems is challenging due to decoherence and loss.
- Coupled cavities offer a promising platform for mediating entanglement.
Purpose of the Study:
- To develop a deterministic, one-step scheme for generating multiparticle entanglement between two spatially separated cold atomic clouds.
- To engineer entanglement that is robust against cavity state variations and fiber losses.
- To assess the experimental feasibility of the proposed scheme.
Main Methods:
- A one-step scheme utilizing precisely controlled laser fields (intensities and detunings) and time evolution.
- Coupling two cold atomic clouds in distant cavities via an optical fiber.
- Analyzing experimental feasibility based on recent advances in strong coupling of cold 87Rb atoms and fiber cavities.
Main Results:
- Deterministic generation of multiparticle entangled states between two cold atomic clouds.
- Quantum manipulations are insensitive to cavity states and fiber losses.
- Scheme feasibility is supported by recent experimental progress.
Conclusions:
- The proposed scheme offers a robust and deterministic method for creating entanglement between distant atomic ensembles.
- This work provides a significant step towards building quantum communication and networking systems.
- The approach holds promise for future applications in distributed quantum computing and secure communication.
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