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On-chip photon-electron coherent coupling using rare-earth oxide film optical waveguides

Research Project

Project/Area Number 19H02636
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 30020:Optical engineering and photon science-related
Research InstitutionNihon University (2021)
NTT Basic Research Laboratories (2019-2020)

Principal Investigator

TAWARA Takehiko  日本大学, 工学部, 教授 (40393798)

Co-Investigator(Kenkyū-buntansha) 足立 智  北海道大学, 工学研究院, 教授 (10221722)
後藤 秀樹  日本電信電話株式会社NTT物性科学基礎研究所, 企画, 主席研究員 (10393795)
尾身 博雄  大和大学, 理工学部, 教授 (50257218)
徐 学俊  日本電信電話株式会社NTT物性科学基礎研究所, フロンティア機能物性研究部, 主任研究員 (80593334)
章 国強  日本電信電話株式会社NTT物性科学基礎研究所, フロンティア機能物性研究部, 主任研究員 (90402247)
稲葉 智宏  日本電信電話株式会社NTT物性科学基礎研究所, フロンティア機能物性研究部, 研究員 (90839119)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Keywords量子メモリ / 希土類 / 導波路 / 通信波長 / 希土類酸化物 / 薄膜 / コヒーレント結合 / 希土類酸化薄膜 / オンチップ量子光メモリ / 酸化物 / 位相緩和時間
Outline of Research at the Start

量子情報通信ネットワークの実現に必須な固体オンチップ量子光メモリの動作実証を目指す。具体的にはSi基板上にエピタキシャル成長された167Er添加希土類酸化物薄膜(167Er:REO)による光導波路構造を用い、量子光メモリの基本動作を通信波長帯光子かつオンチップで実証する。主な課題は以下の3点である。①核スピン除去されたREOエピタキシャル薄膜に167Er(I=7/2)を添加することで、長いコヒーレンス時間T2をゼロ磁場下で実現する、②Si/167Er:REO/Siのスロット型光導波路をSi基板上に形成する、③導波路構造において通信波長帯光子での量子コヒーレント結合とメモリ動作を実証する。

Outline of Final Research Achievements

Aiming to demonstrate the operation of solid-state on-chip quantum optical memory, we studied the realization of optical-electronic quantum coherent coupling using a 167Er-doped rare earth oxide thin film waveguide structure on a Si substrate at telecom-band light. By designing a new slot-type optical waveguide that propagates light through a low-refractive-index layer and optimizing the structure, a propagation loss of 2.3 dB/cm was achieved, which is much lower than the target of 10 dB/cm. In addition, quantum optical memory operation with a high efficiency of 3.5% for a memory time of 0.5 μs under a zero magnetic field was achieved using 167Er-doped rare-earth oxide bulk crystals. These results contribute significantly to the realization of thin-film waveguide quantum optical memory.

Academic Significance and Societal Importance of the Research Achievements

量子情報通信ネットワークの実現に向け、世界的に熾烈な研究開発が進められている中で、様々な要素技術が実用レベルまで進歩しつつある。一方で量子中継に必須となる固体量子ノード、特に量子光メモリの研究が他と比べ遅れをとっている。この課題を解決する手段として、我々は通信波長帯光子と直接リンクでき、かつ成熟したSiフォトニクス技術とも親和性が高いSi基板上167Er添加希土類酸化薄膜導波路構造に着目した。今回得られた成果は量子光メモリおよびグローバル量子インターネットの実現に大きく近づく成果である。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (39 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (28 results) (of which Int'l Joint Research: 15 results,  Invited: 1 results) Book (1 results) Remarks (1 results) Patent(Industrial Property Rights) (2 results)

  • [Int'l Joint Research] University of Otago(ニュージーランド)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Otago(ニュージーランド)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Precise spectroscopy of <sup>167</sup>Er:Y<sub>2</sub>SiO<sub>5</sub> based on laser frequency stabilization using a fiber laser comb2021

    • Author(s)
      Yasui S.、Hiraishi M.、Ishizawa A.、Omi H.、Kaji R.、Adachi S.、Tawara T.
    • Journal Title

      Optics Express

      Volume: 29 Issue: 17 Pages: 27137-27137

    • DOI

      10.1364/oe.433002

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Low-loss erbium-incorporated rare-earth oxide waveguides on Si with bound states in the continuum and the large optical signal enhancement in them2021

    • Author(s)
      Xu Xuejun、Inaba Tomohiro、Tsuchizawa Tai、Ishizawa Atsushi、Sanada Haruki、Tawara Takehiko、Omi Hiroo、Oguri Katsuya、Gotoh Hideki
    • Journal Title

      Optics Express

      Volume: 29 Issue: 25 Pages: 41132-41132

    • DOI

      10.1364/oe.437868

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rare-Earth-Mediated Optomechanical System in the Reversed Dissipation Regime2021

    • Author(s)
      Ohta Ryuichi、Herpin Loic、Bastidas VictorM.、Tawara Takehiko、Yamaguchi Hiroshi、Okamoto Hajime
    • Journal Title

      Physical Review Letters

      Volume: 126 Issue: 4

    • DOI

      10.1103/physrevlett.126.047404

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Epitaxial single-crystal rare-earth oxide in horizontal slot waveguide for silicon-based integrated active photonic devices2020

    • Author(s)
      Xuejun Xu, Viviana Fili, Wojciech Szuba, Masaya Hiraishi, Tomohiro Inaba, Takehiko Tawara, Hiroo Omi, Hideki Gotoh
    • Journal Title

      Optics Express

      Volume: 28 Issue: 10 Pages: 14448-14460

    • DOI

      10.1364/oe.389765

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optical coherent transients in 167Er3+ at telecom-band wavelength2019

    • Author(s)
      Hiraishi Masaya、IJspeert Mark、Tawara Takehiko、Adachi Satoru、Kaji Reina、Omi Hiroo、Gotoh Hideki
    • Journal Title

      Optics Letters

      Volume: 44 Issue: 20 Pages: 4933-4933

    • DOI

      10.1364/ol.44.004933

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Remarkable Improvement of Atomic-Frequency-Comb Memory Efficiency by Comb Transfer Method in 167Er3+:Y2SiO5 under Zero Magnetic Field2022

    • Author(s)
      S. Yasui, M. Hiraishi, A. Ishizawa, H. Omi, T. Inaba, X. Xu, R. Kaji, S. Adachi, T. Tawara
    • Organizer
      CLEO2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 167Er:Y2SiO5におけるAtomic Frequency Comb多重量子メモリプロトコルの実証2022

    • Author(s)
      安井翔一郎, 平石真也, 石澤淳, 尾身博雄, 稲葉智宏, Xuejun Xu, 鍜治怜奈, 足立智, 俵毅彦
    • Organizer
      第57回応用物理学会北海道支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Er3+:Y2SiO5結晶上における表面弾性波の生成2022

    • Author(s)
      太田竜一、徐学俊、稲葉智宏、眞田治樹、石澤淳、俵毅彦、小栗克弥、山口浩司、岡本創
    • Organizer
      2022年春季応物学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 167Er:Y2SiO5における零磁場下での通信波長帯Atomic Frequency Comb時間多重量子メモリプロトコルの実証2022

    • Author(s)
      安井翔一郎, 平石真也, 石澤淳, 尾身博雄, 稲葉智宏, Xuejun Xu, 鍜治怜奈, 足立智, 俵毅彦
    • Organizer
      2022年春季応物学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Strain-Mediated Energy Control of Rare-Earth Ions Toward a Highly-Coherent Hybrid Opto-Mechanical System2021

    • Author(s)
      R. Ohta, L. Herpin, V. Bastidas, T. Tawara, H. Yamaguchi, H. Okamoto
    • Organizer
      CLEO2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Homogeneous Linewidth of 167Er:Y2SiO5 in Frequency Domain Measurement using Laser Stabilization with Optical Frequency Comb2021

    • Author(s)
      S. Yasui, M. Hiraishi, A. Ishizawa, H. Omi, R. Kaji, S. Adachi, T. Tawara
    • Organizer
      2021 International Conference on Solid State Devices and Materials (SSDM2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Frequency and Time Domain Measurements of 167Er3+:Y2SiO5 by Stabilizing the Optical Frequency Using a Fiber Laser Comb2021

    • Author(s)
      S. Yasui, M. Hiraishi, A. Ishizawa, H. Omi, R. Kaji, S. Adachi, T. Tawara
    • Organizer
      International Symposium on Novel Materials and Quantum Technologies (ISNTT2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photoluminescence Enhancement of Erbium Ions in Rare-earth Oxide Thin Films Using Si-based Microring Resonators2021

    • Author(s)
      M. Hiraishi, T. Inaba, X. Xu, H. Sanada, T. Tsuchizawa, A. Ishizawa, T. Tawara, H. Omi, J. Longdell, K. Oguri, H. Gotoh
    • Organizer
      International Symposium on Novel Materials and Quantum Technologies (ISNTT2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Micromechanical Control of the Optical Resonances of Erbium Ions2021

    • Author(s)
      R. Ohta, L. Herpin, V. M. Bastidas, T. Tawara, H. Yamaguchi, H. Okamoto
    • Organizer
      International Symposium on Novel Materials and Quantum Technologies (ISNTT2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 量子情報プラットフォームとしてのEr添加固体材料の開発2021

    • Author(s)
      俵 毅彦、平石 真也、稲葉 智宏、徐 学俊、太田 竜一、足立 智、尾身 博雄
    • Organizer
      2021年秋季応物学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Optical Coupling between Er3+ and Integrated Microring Resonators on Si2021

    • Author(s)
      M. Hiraishi, T. Inaba, X. Xu, H. Sanada, T. Tsuchizawa, A. Ishizawa, T. Tawara, H. Omi, J. Longdell, K. Oguri, H. Gotoh
    • Organizer
      2021年秋季応物学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Optical Signal Enhancement in Er-incorporated Rare-Earth Oxide Waveguides on Si2021

    • Author(s)
      X. Xu, T. Inaba, T. Tsuchizawa, A. Ishizawa, T. Tawara, H. Omi, H. Gotoh
    • Organizer
      2021年3月春季応物学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 高Q値中赤外Siマイクロディスク共振器2021

    • Author(s)
      三宅拓磨, 徐学俊, 澤野憲太郎, 丸泉琢也, 俵毅彦, 後藤秀樹
    • Organizer
      2021年3月春季応物学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 167Er3+:Y2SiO5の超微細構造Λ型準位系における位相緩和時間の周波数および時間領域測定2021

    • Author(s)
      安井翔一郎, 平石真也, 石澤淳, 尾身博雄, 鍜治怜奈, 足立智, 俵毅彦
    • Organizer
      2021年3月春季応物学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Silicon Microdisk Resonators in the Mid-Infrared for On-Chip Gas Sensing2020

    • Author(s)
      T. Miyake, R. Osako, X. Xu, K. Sawano, T. Maruizumi, T. Tawara, H. Gotoh
    • Organizer
      2020 Int. Conf. on Solid State Devices and Materials (SSDM2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 機械振動子を用いたEr3+:Y2SiO5励起準位の歪制御2020

    • Author(s)
      太田竜一, Bastidas Victor, 俵毅彦, 山口浩司, 岡本創
    • Organizer
      2020年9月秋季応物学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Optical Coherent Transient of 167Er3+ in Y2SiO5 at Telecom-band Wavelength2019

    • Author(s)
      M. Hiraishi, M. IJspeert, T. Tawara, S. Adachi, R. Kaji, H. Omi, H. Gotoh
    • Organizer
      Int. School and Symp. on Nanoscale Transport and phoTonics 2019 (ISNTT2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improvement of the Crystallinity of Gd2O3 on Si by an Interface Control2019

    • Author(s)
      T. Inaba, X. Xu, T. Tawara, H. Omi, H. Yamamoto, H. Gotoh
    • Organizer
      Int. School and Symp. on Nanoscale Transport and phoTonics 2019 (ISNTT2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optical absorption and Emission of Erbium Ions in Integrated Optical Waveguides2019

    • Author(s)
      X. Xu, V. Fili, T. Inaba, T. Tawara, H. Omi, H. Gotoh
    • Organizer
      Int. School and Symp. on Nanoscale Transport and phoTonics 2019 (ISNTT2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Horizontal slot waveguides based on epitaxial rare-earth oxide on Si2019

    • Author(s)
      X. Xu, V. Fili, T. Inaba, T. Tawara, H. Omi, H. Gotoh
    • Organizer
      2019 Int. Conf. on Solid State Devices and Materials (SSDM2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Horizontal slot waveguides with strong optical confinement in low refractive index oxide films2019

    • Author(s)
      X. Xu, T. Inaba, T. Tawara, H. Omi, H. Gotoh
    • Organizer
      24th Optelectronics and Communications Conf. (OECC2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Rabi frequency and coherence time in the hyperfine structure of 167Er3+ in Y2SiO5 through coherent transients2019

    • Author(s)
      M. Hiraishi, M. IJspeert, T.Tawara, S. Adachi, H. Omi, H. Gotoh
    • Organizer
      Compound Semiconductor Week 2019 (CSW2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Suppressing interdiffusion of Si in Er-doped CeO2 / Si(111) and its impact on the optical property2019

    • Author(s)
      T. Inaba, X. Xu, T. Tawara, H. Omi, H. Yamamoto, H. Gotoh
    • Organizer
      Compound Semiconductor Week 2019 (CSW2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Population relaxation and coherence times of 167Er3+ diluted to 10 ppm in Y2SiO5 at zero magnetic field2019

    • Author(s)
      M. Hiraishi, M. IJspeert, T. Tawara, H. Omi, H. Gotoh
    • Organizer
      Conf. on Lasers and Electro-Optics 2019 (CLEO2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Si基板上に成長したGd2O3の高品質化における成長初期表面状態の重要性2019

    • Author(s)
      稲葉智宏,徐学俊,俵毅彦,尾身博雄,山本秀樹,後藤秀樹
    • Organizer
      2019年秋季応物学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Si基板上へのSi/Gd2O3ヘテロ構造のMBE成長2019

    • Author(s)
      V. Fili, W. Szuba, 徐学俊,稲葉智宏,俵毅彦,尾身博雄,後藤秀樹
    • Organizer
      2019年秋季応物学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Optical properties of Er-incorporated rare-earth oxide in holizontal slot waveguide2019

    • Author(s)
      X. Xu, V. Fili, T. Inaba, T. Tawara, H. Omi, H. Gotoh
    • Organizer
      2019年秋季応物学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] サブ波長格子構造を有するSi中赤外導波路2019

    • Author(s)
      大迫力人,徐学俊,忠永修,澤野憲太郎,丸泉琢也,俵毅彦,後藤秀樹
    • Organizer
      2019年秋季応物学会
    • Related Report
      2019 Annual Research Report
  • [Book] Hybrid Quantum Systems2021

    • Author(s)
      (Editors) Y. Hirayama, K. Ishibashi, K. Nemoto (Authors) T. Tawara, et al.
    • Total Pages
      347
    • Publisher
      Springer Nature
    • ISBN
      9789811666810
    • Related Report
      2021 Annual Research Report
  • [Remarks] 日本大学工学部電気電子工学科光通信デバイス研究室ホームページ

    • URL

      http://www.ee.ce.nihon-u.ac.jp/~tawara/index.html

    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] 固体量子メモリ2020

    • Inventor(s)
      太田竜一,俵毅彦,岡本創,山口浩司
    • Industrial Property Rights Holder
      太田竜一,俵毅彦,岡本創,山口浩司
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] アモルファス酸化シリコンを介した希土類酸化物結晶の成長2019

    • Inventor(s)
      稲葉智宏, 俵毅彦, 尾身博雄
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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