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Updated: Jun 4, 2025
00:07
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
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Quantum Positioning Scheme Based on Microwave-Optical Entanglement.
1Laboratory of Advanced Navigation Technology, Information and Navigation College, Air Force Engineering University, Xi'an 710049, China.
Sensors (Basel, Switzerland)
|December 17, 2024
Summary
This study introduces a quantum positioning system (QPS) using microwave-optical entanglement for superior free-space transmission. The proposed QPS demonstrates high entanglement and achieves minimal positioning error, proving its efficiency and robustness.
Area of Science:
- Quantum physics
- Optics and photonics
- Microwave engineering
Background:
- Microwaves offer advantages over optical waves in free-space transmission due to better fog penetration and lower atmospheric loss.
- Entanglement-based quantum technologies are emerging for advanced applications.
Purpose of the Study:
- To propose a novel quantum positioning system (QPS) utilizing microwave-optical entanglement.
- To analyze the performance, stability, and key parameters of the proposed QPS.
Main Methods:
- Preparation of microwave-optical entanglement using nano-cavity electro-opto-mechanic converters.
- Simulation-based analysis of entanglement features, system stability, and positioning accuracy.
- Investigation of parameter impacts, including transmissivity and photon conversion efficiency.
Main Results:
- Achieved entanglement degrees exceeding one for both microwave-optic and optic-optic entanglement.
- Demonstrated a minimal positioning error of 6.4×10-7m² under ideal conditions with transmissivity of 0.5.
- Successfully mapped continuous positioning traces of a plane.
Conclusions:
- The proposed QPS is theoretically efficient and robust.
- The scheme effectively prepares and maintains entanglement for precise positioning.
- Microwave-optical entanglement offers a promising foundation for advanced quantum positioning systems.
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