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Efficient single-photon directional transfer between waveguides via two giant atoms.
Optics Express
|November 14, 2024
Summary
We demonstrate complete single-photon transfer between waveguides in a quantum electrodynamics system by tuning atom coupling. This enables directional photon propagation, crucial for quantum networks.
Area of Science:
- Quantum optics
- Quantum electrodynamics
- Solid-state physics
Background:
- Investigating single-photon transport is key for quantum technologies.
- Controlling photon behavior in coupled waveguide systems presents unique challenges.
Purpose of the Study:
- To explore single-photon transport properties in a double-waveguide quantum electrodynamics system.
- To achieve complete and directional photon transfer between waveguides.
Main Methods:
- Adjusting direct coupling strength between giant atoms to achieve energy degeneracy of collective states.
- Analyzing scattering interference of eigenstates to understand photon transfer dynamics.
Main Results:
- Complete resonant photon transfer between waveguides is achieved through scattering interference.
- Directional propagation of resonant photons in the output waveguide is observed.
- Perfect transfer conditions identified as energy and decay rate degeneracy of scattering states.
Conclusions:
- A scheme for efficient, directionally controlled photon transfer is proposed.
- The findings have potential applications in quantum networks and integrated photonic circuits.
