Study on fabricating entangled photon sources which are highly tolerant to the structural fluctuation

2011 Fiscal Year Final Research Report

• Project/Area Number: 21681020
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Microdevices/Nanodevices
• Research Institution: Hokkaido University
• Principal Investigator: KUMANO Hidekazu 北海道大学, 電子科学研究所, 准教授 (70292042)
• Project Period (FY): 2009 – 2011
• Keywords: 量子ディスク / 量子リング / もつれ合い光子源 / 形状揺らぎ / 微細構造分裂

Research Abstract

Suppression of the fine structure splitting(FSS) was carried out by controlling anisotropy of nanostructures with GaAs embedding and forming disk-like nanostructure by Indium-flash method. It is found that after optimizing conditions for each process and fabricating quantum disk structure, the FSS has successfully reduced from 100μeV down to 30μeV. Furthermore, the FSS has reduced as low as 5μeV by introducing quantum ring structure.

Research Products

• [Journal Article] Characterization of two-photon polarization mixed states generated from entangled-classical hybrid photon source (2011)
  • Author(s): H. Kumano, K. Matsuda, S. Ekuni, H. Sasakura, and I. Suemune
  • Journal Title: Opt. Express Volume: 19 Pages: 14249-14259
  • Peer Reviewed
• [Journal Article] Enhanced photon generation in a Nb/n-InGaAs/p-InP superconductor/semiconductor-diode light emitting device (2011)
  • Author(s): H. Sasakura, S. Kuramitsu, Y. Hayashi, K. Tanaka, T. Akazaki, E. Hanamura, R. Inoue, H. Takayanagi, Y. Asano, C. Hermannstadter, H. Kumano, and I. Suemune
  • Journal Title: Phys. Rev. Lett Volume: 107 Pages: 157403-1-5
  • Peer Reviewed
• [Journal Article] Strongly suppressed multi-photon generation from a single quantum dot in a metal-embedded structure (2011)
  • Author(s): H. Nakajima, S. Ekuni, H. Kumano, Y. Idutsu, S. Miyamura, D. Kato, S. Ida, H. Sasakura, and I. Suemune
  • Journal Title: phys. stat. sol(c) Volume: 8 Pages: 337-339
  • Peer Reviewed
• [Journal Article] 量子情報通信のための単一光子・量子もつれ光子対光源 (2011)
  • Author(s): 末宗幾夫、熊野英和、笹倉弘理
  • Journal Title: 光学 Volume: 40巻9号 Pages: 472-477
  • Peer Reviewed
• [Journal Article] Quantum-dot-based photon emission and media conversion for quantum information applications (2010)
  • Author(s): H. Kumano, H. Nakajima, S. Ekuni, Y. Idutsu, H. Sasakura, and I. Suemune
  • Journal Title: Adv. Math. Phys Pages: 391607-1-14
  • Peer Reviewed
• [Journal Article] First-order photon interference of a single photon from a single quantum dot (2010)
  • Author(s): S. Ekuni, H. Nakajima, H. Sasakura, I. Suemune, and H. Kumano
  • Journal Title: Physica Volume: E42 Pages: 2536-2539
  • Peer Reviewed
• [Journal Article] A Cooper-Pair Light-Emitting Diode : Temperature Dependence of Both Quantum Efficiency and Radiative Recombination Lifetime (2010)
  • Author(s): I. Suemune, Y. Hayashi, S. Kuramitsu, K. Tanaka, T. Akazaki, H. Sasakura, R. Inoue, H. Takayanagi, Y. Asano, E. Hanamura, S. Odashima, and H. Kumano
  • Journal Title: Appl. Phys. Express Volume: 3 Pages: 054001-1-4
  • Peer Reviewed
• [Journal Article] Spin-flip quenching in trion state mediated by optical phonons in a single quantum dot (2009)
  • Author(s): H. Kumano, S. Ekuni, H. Kobayashi, H. Sasakura, I. Suemune, S. Adachi, and S. Muto
  • Journal Title: phys. stat. sol(b) Volume: 246 Pages: 775-778
  • Peer Reviewed
• [Presentation] Characterization of two-photon mixed states employed with polarization entangled-classical hybrid photon source (2011)
  • Author(s): K. Matsuda, H. Kumano, S. Ekuni, H. Sasakura, and I. Suemune
  • Organizer: Quantum Information Processing and Communication
  • Place of Presentation: Zurich, Switzerland
  • Year and Date: 20110905-09
• [Presentation] Metal-embedded semiconductor single quantum dot as a novel highly pure single-photon source (2011)
  • Author(s): H. Nakajima, S. Ekuni, H. Kumano, Y. Idutsu, S. Ida, H. Sasakura, and I. Suemune
  • Organizer: SPIE photonics west
  • Place of Presentation: Moscone Convention Center, San Francisco, USA
  • Year and Date: 20110123-28
• [Presentation] Quantum-dot single photon emitter of higher photon extraction efficiency and lower multiple-photon emission probability with metal-embedded structure (2010)
  • Author(s): H. Kumano, H. Nakajima, S. Ekuni, D. Kato, S. Miyamura, J. H. Huh, H. Sasakura, and I. Suemune
  • Organizer: International Conference on Semiconductor Quantum Dots
  • Place of Presentation: Nottingham, UK
  • Year and Date: 20100426-30
• [Presentation] 量子リング構造における核磁場の双安定特性 (2009)
  • Author(s): 和田雅樹、笹倉弘理、熊野英和、末宗幾夫
  • Organizer: 秋季第70回応用物理学会学術講演会
  • Place of Presentation: 富山大学
  • Year and Date: 20090908-11
• [Presentation] Conversion of Photon polarization and exciton spins in Semiconductor Quantum Dots (2009)
  • Author(s): H. Kumano
  • Organizer: International Workshop on Photons and Spins in Nanostructures
  • Place of Presentation: Hokkaido University, Sapporo, Japan
  • Year and Date: 20090727-28
• [Presentation] Two-mode photon interference in a quantum-dot single photon emitter (2009)
  • Author(s): H. Kumano, H. Nakajima, S. Ekuni, H. Sasakura, and I. Suemune
  • Organizer: International conference on Modulated Semiconductor Structures
  • Place of Presentation: Kobe Kobe, Japan
  • Year and Date: 20090719-24
• [Remarks]
  • URL: http://nanophoto.es.hokudai.ac.jp/