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Related Experiment Video

Updated: Jan 19, 2026

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Indirect light-matter interaction in dissipative coupled cavities.

Elijah M Sampuli, Yan Wang, Jie Song

    Optics Express
    |September 13, 2019
    PubMed
    Summary

    We demonstrate that increasing the number of three-level atoms in a coupled cavity enhances effective coupling, enabling Rabi oscillations without strong atom-cavity interaction. This method can suppress atomic spontaneous emissions.

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    Area of Science:

    • Quantum optics
    • Atomic physics
    • Cavity quantum electrodynamics

    Background:

    • Coupled cavities and ensembles of atoms are crucial for quantum information processing.
    • Understanding atom-cavity interactions is key to controlling quantum states and emissions.

    Purpose of the Study:

    • To investigate the dynamics of three-level Λ atoms in a coupled cavity system.
    • To explore methods for enhancing effective atom-cavity coupling without requiring strong coupling regimes.
    • To demonstrate the suppression of atomic spontaneous emissions.

    Main Methods:

    • Simulating the evolution of a three-level Λ atom ensemble within a coupled cavity.
    • Analyzing the effects of varying atom number, classical field amplitude, and photon hopping rate.
    • Observing Rabi oscillations and atomic spontaneous emission dynamics.

    Main Results:

    • Effective coupling is enhanced by increasing the number of atoms, even without strong coupling.
    • Rabi oscillations are observed between atoms and cavities under specific conditions (classical field amplitude not equal to photon hopping rate, zero detunings).
    • Increasing the number of atoms can lead to the elimination of the excited atomic state, suppressing spontaneous emissions.

    Conclusions:

    • The number of atoms is a critical parameter for enhancing effective coupling and controlling quantum dynamics in coupled cavities.
    • The proposed scheme offers a pathway to suppress unwanted atomic spontaneous emissions.
    • Optimal performance can be achieved by tuning the classical field amplitude and photon hopping rate.