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Cavity Dark Mode of Distant Coupled Atom-Cavity Systems.
Donald H White1, Shinya Kato1,2, Nikolett Német3,4
1Department of Applied Physics, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.
Physical Review Letters
|July 27, 2019
Summary
Researchers explored normal modes in a fiber-coupled cavity quantum electrodynamics system. They demonstrated individual mode excitation and observed a cavity dark mode, enabling remote atom excitation and nonlocal saturation.
Area of Science:
- Quantum Optics
- Cavity Quantum Electrodynamics (cQED)
- Atomic Physics
Background:
- Cavity quantum electrodynamics (cQED) systems couple light and matter.
- All-fiber coupled systems offer robust platforms for quantum information processing.
- Understanding normal modes is crucial for controlling light-matter interactions.
Purpose of the Study:
- Investigate the normal modes of an all-fiber coupled cQED system.
- Demonstrate individual excitation of these normal modes.
- Explore the properties and applications of the 'cavity dark mode'.
Main Methods:
- Combined experimental and theoretical approaches.
- Utilized an all-fiber coupled cavity system.
- Spectroscopic techniques to probe normal mode behavior.
Main Results:
- Identified five nondegenerate normal modes in the system.
- Successfully excited each normal mode independently.
- Observed a cavity dark mode with no photonic excitation in directly coupled cavities.
- Demonstrated remote excitation and nonlocal saturation of atoms via the dark mode.
Conclusions:
- The study elucidates the normal mode structure of fiber-coupled cQED systems.
- Individual mode control is achievable.
- The cavity dark mode provides a novel pathway for remote quantum control and atom manipulation.
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