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Related Experiment Video

Updated: Nov 10, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

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Efficient microwave-to-optical single-photon conversion with a single flying circular Rydberg atom.

Yu-Guo Liu, Keyu Xia, Shi-Liang Zhu

    Optics Express
    |April 6, 2021
    PubMed
    Summary
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    We developed a method to convert microwave photons to optical photons using circular Rydberg atoms. This technique achieves high conversion efficiency, crucial for quantum information processing.

    Area of Science:

    • Quantum optics
    • Atomic physics
    • Quantum information science

    Background:

    • Efficient quantum state transduction between microwave and optical frequencies is essential for quantum networks.
    • Circular Rydberg atoms offer long coherence times and strong light-matter interactions, making them promising for quantum information processing.

    Purpose of the Study:

    • To propose and theoretically analyze a novel scheme for converting single microwave photons to flying optical photons.
    • To leverage circular Rydberg atoms as a quantum memory and interface between microwave and optical cavities.

    Main Methods:

    • Utilizing flying circular Rydberg atoms as a quantum 'data bus' to connect microwave and optical cavities.
    • Employing fast decircularization and three-photon Raman transitions to link atomic energy levels in the microwave and optical domains.

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    Related Experiment Videos

    Last Updated: Nov 10, 2025

    Generation and Coherent Control of Pulsed Quantum Frequency Combs
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    Gradient Echo Quantum Memory in Warm Atomic Vapor
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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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  • Simulating the conversion efficiency based on experimental data and theoretical models.

    • Main Results:

    • The proposed scheme demonstrates efficient conversion of microwave photons to optical photons.
    • Simulated conversion efficiency reaches 60%, with a theoretical maximum of approximately 87%.
    • The method benefits from low-loss processes and the long lifetime of circular Rydberg states.

    Conclusions:

    • The developed scheme provides a viable pathway for high-efficiency microwave-to-optical photon conversion.
    • This technology has significant implications for building quantum repeaters and distributed quantum computing systems.
    • The use of circular Rydberg atoms as interfaces opens new avenues in quantum communication and sensing.