First Demonstration of Electrically Driven 1.55 μm Single-Photon Generator

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概要

• 論文の詳細を見る

• We succeeded in demonstrating single-photon generation from a single InAs quantum dot (QD) at a 1.55 μm band by current injection. A p–i–n light-emitting diode (LED), which includes a quantum dot layer, was grown on an n-InP substrate and fabricated into a nano scaled mesa structure with electrodes. Electrical pulses of 80 ps width were injected in order to generate excitons in quantum dots. We directly determined the electroluminescence (EL) and radiative lifetime of a single exciton to be 1.59 ns. Hanbury-Brown and Twiss (HBT)-type photon correlation measurements proved the antibunching behavior of exciton recombination in a current-injected quantum dot at a wavelength of 1551.2 nm. These measurements demonstrate that our QD LEDs are sources of triggered single photons in the C-band by current injection.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2008-04-25

著者

• MIYAZAWA Toshiyuki

  Collaborative Institute for Nano Quantum Information Electronics, The University of Tokyo

• HIROSE Shinnichi

  Fujitsu Laboratories Ltd.

• OKUMURA Shigekazu

  Fujitsu Laboratories Ltd.

• TAKEMOTO Kazuya

  Fujitsu Laboratories Ltd.

• TAKATSU Motomu

  Fujitsu Laboratories Ltd.

• Arakawa Yasuhiko

  Collaborative Institute For Nano Quantum Information Electronics The University Of Tokyo

• Usuki Tatsuya

  Collaborative Institute For Nano Quantum Information Electronics The University Of Tokyo

• Yokoyama Naoki

  Collaborative Research Team Green Nanoelectronics Center (gnc)

• Miyazawa Toshiyuki

  Collaborative Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505, Japan

• Yokoyama Naoki

  Collaborative Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505, Japan

• Usuki Tatsuya

  Collaborative Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505, Japan

• Hirose Shinnichi

  Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan

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