Quantum Tomography of the Photon-Plasmon Conversion Process in a Metal Hole Array
Abstract
In the past decades, quantum plasmonics has become an active area due to its potential applications in on-chip plasmonic devices for quantum information processing. However, the fundamental physical process, i.e., how a quantum state of light evolves in the photon-plasmon conversion process, has not been clearly understood. Here, we report a complete characterization of the plasmon-assisted extraordinary optical transmission process through quantum process tomography. By inputting various coherent states to interact with the plasmonic structure and detecting the output states with a homodyne detector, we reconstruct the process tensor of the photon-plasmon conversion process. Both the amplitude and phase information of the process are extracted, which explains the evolution of the quantum-optical state after the coupling with plasmons. Our experimental demonstration constitutes a fundamental block for future on-chip applications of quantum plasmonic circuits.
Cite
@article{arxiv.1904.10652,
title = {Quantum Tomography of the Photon-Plasmon Conversion Process in a Metal Hole Array},
author = {Lei Tang and Kaimin Zheng and Jiale Guo and Yi Ouyang and Yang Wu and Chuanqing Xia and Long Li and Fang Liu and Yong Zhang and Lijian Zhang and Min Xiao},
journal= {arXiv preprint arXiv:1904.10652},
year = {2019}
}
Comments
9 pages, 3 figures