Author Affiliations
Abstract
1 Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei, 230026, China
2 Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, 230026, China
3 Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, 230026, China
Higher emission rates and controllable emission direction are big concerns when it comes to finding a good single photon source. Recently, surface plasmons are introduced to this application, as they can manipulate and enhance the luminescence of single emitters. Here, we experimentally achieve a wide-area multiple directional enhanced light source through periodic metal grating structures. The surface-plasmon-coupled emission can have multiple precisely emission angles by just changing the period of the grating. Our result indicates that metal plasmonic grating can be used as a productive quantum device for unidirectional quantum light sources in quantum optics.
240.6680 Surface plasmons 070.0070 Fourier optics and signal processing Chinese Optics Letters
2017, 15(8): 082401
Author Affiliations
Abstract
Spin (polarization) is widely used in free-space optics, while in photonic integrated circuits (PICs), information is usually encoded in optical route. So a practical way to connect these two encoding methods is necessary for information communication. In this letter, an encoding convertor is designed to connect spin encoding and route encoding. Finite element method is used to calculate the conversion efficiency and extinction ratio of the encoding convertor and the theoretical analyses are also given. Our protocol shows a friendly way to convert optical spin information to route information, which will promote the compatibility of free-space optics and PICs.
240.6680 Surface plasmons 250.5300 Photonic integrated circuits 230.5440 Polarization-selective devices Chinese Optics Letters
2014, 12(7): 072401
