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Updated: Jan 23, 2026
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
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Quantum tomography of the photon-plasmon conversion process in a metal hole array
Optics Express
|June 6, 2019
Summary
Researchers characterized quantum state evolution in photon-plasmon conversion using quantum process tomography. This study provides a fundamental understanding for developing quantum plasmonic circuits for quantum information processing.
Area of Science:
- Quantum optics
- Plasmonics
- Quantum information science
Background:
- Quantum plasmonics is crucial for on-chip quantum information processing.
- A detailed microscopic quantum model for photon-plasmon conversion is lacking.
Purpose of the Study:
- To characterize the photon-plasmon conversion process in plasmon-assisted extraordinary optical transmission.
- To develop a fundamental understanding of quantum state evolution in plasmonic devices.
Main Methods:
- Utilized quantum process tomography to analyze the photon-plasmon conversion.
- Input various coherent states and detected output states using a homodyne detector.
- Reconstructed the process tensor to extract amplitude and phase information.
Main Results:
- Successfully characterized the complete photon-plasmon conversion process.
- Extracted both amplitude and phase information of the quantum-optical state evolution.
- Demonstrated a method for analyzing quantum state transformation in plasmonic structures.
Conclusions:
- The study provides a detailed microscopic quantum model for photon-plasmon conversion.
- The findings are a fundamental step towards realizing on-chip quantum plasmonic circuits.
- Enables precise control and understanding of quantum states in plasmonic devices.
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