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Quantum-Dot-Based Photon Emission and Media Conversion for Quantum Information Applications

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Title: Quantum-Dot-Based Photon Emission and Media Conversion for Quantum Information Applications
Authors: Kumano, H. Browse this author
Nakajima, H. Browse this author
Ekuni, S. Browse this author
Idutsu, Y. Browse this author
Sasakura, H. Browse this author
Suemune, I. Browse this author →KAKEN DB
Issue Date: 2010
Publisher: Hindawi Publishing
Journal Title: Advances in Mathematical Physics
Volume: 2010
Start Page: 1
End Page: 13
Publisher DOI: 10.1155/2010/391607
Abstract: Single-photon as well as polarization-correlated photon pair emission from a single semiconductor quantum dots is demonstrated. Single photon generation and single photon-pair generation with little uncorrelated multiphoton emission and the feasibility of media conversion of the quantum states between photon polarization and electron spin are fundamental functions for quantum information applications. Mutual media conversion for the angular momentum between photon polarization and electron spin is also achieved with high fidelity via positively charged exciton state without external magnetic field. This is a clear indication that the coupling of photon polarizations and electron spins keeps secured during whole processes before photon emission. Possibility of a metal-embedded structure is demonstrated with the observation of drastic enhancement of excitation and/or collection efficiency of luminescence as well as clear antibunching of photons generated from a quantum dot.
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 末宗 幾夫

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