Correlation measurement and electron-nuclei coupled dynamics in quantum dots

Toshihide Takagahara, Özgür Çakir

研究成果: Article

1 引用 (Scopus)

抄録

Photons and electrons are the key quantum media for the quantum information processing based on solid state devices. The essential ingredients to accomplish the quantum repeater were investigated and their underlying physics were revealed. The relevant elementary processes of the quantum state transfer between a single photon and a single electron were analyzed, to clarify the conditions to be satisfied to achieve the high fidelity of the quantum state transfer. An optical method based on the Faraday rotation was proposed to carry out the Bell measurement of two electrons which is a key operation in the entanglement swapping for the quantum repeater and its feasibility was confirmed. Also investigated was the quantum dynamics in the electron-nuclei coupled spin system in quantum dots and a couple of new phenomena were predicted related to the correlations induced by the hyperfine interaction, namely, bunching and revival in the electron spin measurements. These findings will pave the way to accomplish the efficient and robust quantum repeater and nuclear spin quantum memory.

元の言語English
記事番号11593
ジャーナルJournal of Nanophotonics
1
発行部数1
出版物ステータスPublished - 2007
外部発表Yes

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Semiconductor quantum dots
repeaters
quantum dots
Telecommunication repeaters
nuclei
Electrons
electrons
solid state devices
Photons
bunching
photons
Solid state devices
Faraday effect
bells
ingredients
nuclear spin
electron spin
optics
Physics
physics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

これを引用

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