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Coherent single photon transport in a one-dimensional waveguide coupled with superconducting quantum bits.
1Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
Physical Review Letters
|December 31, 2005
Summary
Researchers explored single microwave photon transport properties using a quantum bit coupled to a waveguide. A unified real-space model Hamiltonian explains experimental findings and predicts novel phenomena like Fano line shapes and one-photon switching.
Area of Science:
- Quantum optics
- Solid-state physics
- Photonics
Background:
- Coupling quantum bits (qubits) in cavities to waveguides reveals unique single microwave photon transport behaviors.
- Previous theoretical and experimental studies highlighted these intriguing properties.
Purpose of the Study:
- To develop a unified real-space model Hamiltonian for analyzing single microwave photon transport.
- To explain existing experimental results and predict new transport phenomena.
Main Methods:
- Utilized a real-space model Hamiltonian approach.
- Integrated theoretical analysis with experimental data.
Main Results:
- Successfully accounted for previously observed experimental transport properties.
- Predicted a general Fano line shape in photon transport.
- Observed symmetric vacuum Rabi splitting in leaky cavities at resonance.
- Demonstrated a one-photon switching capability.
Conclusions:
- The real-space model Hamiltonian provides a comprehensive framework for understanding single microwave photon transport.
- The study reveals new possibilities for controlling and manipulating single photons, with potential applications in quantum technologies.