Developing a fiber optical quantum interface using trapped atoms and nanofiber based photonic crystal cavity

• Project/Area Number: 15H05462
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: The University of Electro-Communications
• Principal Investigator: Nayak Kali Prasanna 電気通信大学, フォトニックイノベーション研究センター, 特任准教授 (70551042)
• Project Period (FY): 2015-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥24,180,000 (Direct Cost: ¥18,600,000、Indirect Cost: ¥5,580,000); Fiscal Year 2018: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2017: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2016: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2015: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
• Keywords: Quantum Optics / Nanophotonics / Single Atom Tweezer / Nanofiber Cavity QED / Quantum Photonics / Quantum Information / Optical Nanofiber / Cavity QED / NanoPhotonics

Outline of Final Research Achievements

In this project, we have developed an optical tweezer based single atom trap on a photonic crystal (PhC) nanofiber cavity. Fabrication of high quality PhC cavities on nanofibers was demonstrated. The cavities were designed for efficient interfacing of trapped single atoms to nanofiber guided modes. The interference between the cavity modes leading to unique spectral features was investigated. Photo-thermal stabilization of the PhC nanofiber cavities under ultra-high vacuum conditions was achieved. It was demonstrated that single atoms can be successfully trapped on the nanofiber cavity and can be observed in real-time through the fiber guided modes. This enables deterministic preparation of single atom events for quantum photonics applications on an all-fiber platform.

Academic Significance and Societal Importance of the Research Achievements

量子情報処理技術は従来の情報通信技術を著しく進歩させ社会に新たな価値を創造し得るものである。そのための重要な課題は、個々の量子系（原子、イオン、固体量子ビットなど）を分離し、それらをファイバ伝播光子により効率的にインターフェースすることである。本プロジェクトでは、トラップされた単一原子をファイバ導波モードに効率的にインターフェースする方法を実現し、それがリアルタイムで観測できることを実証した。本成果は、決定論的な方法で様々な量子フォトニクス実験を実行するための新しいプラットフォームを提供し、量子ネットワークのための新しい技術を可能にするものである。

Research Products

• [Journal Article] Coherent interaction of orthogonal polarization modes in a photonic crystal nanofiber cavity (2019)
  • Author(s): J. Keloth, K. P. Nayak, J. Wang, M. Morinaga, and K. Hakuta
  • Journal Title: Optics Express Volume: 27 Issue: 2 Pages: 1453-1466
  • DOI: 10.1364/oe.27.001453
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Nanofiber quantum photonics (2018)
  • Author(s): Kali P Nayak, Mark Sadgrove, Ramachandrarao Yalla, Fam Le Kien and Kohzo Hakuta
  • Journal Title: Journal of Optics Volume: 20 Issue: 7 Pages: 073001-073001
  • DOI: 10.1088/2040-8986/aac35e
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Composite device for interfacing an array of atoms with a single nanophotonic cavity mode (2017)
  • Author(s): M Sadgrove, KP Nayak
  • Journal Title: New Journal of Physics Volume: TBA Issue: 6 Pages: 063003-063003
  • DOI: 10.1088/1367-2630/aa6d3d
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-Induced Ablation (2017)
  • Author(s): K. P. Nayak, J. Keloth, and K. Hakuta
  • Journal Title: Journal of Visualized Experiments Volume: 120 Issue: 120
  • DOI: 10.3791/55136
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Fabrication of a centimeter-long cavity on a nanofiber for cavity quantum electrodynamics (2017)
  • Author(s): J. Keloth, K. P. Nayak, and K. Hakuta
  • Journal Title: Optics Letters Volume: 42 Issue: 5 Pages: 1003-1006
  • DOI: 10.1364/ol.42.001003
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Interfacing trapped single atoms to a nanofiber cavity (2019)
  • Author(s): K. P. Nayak, J. Wang, J. Keloth and K. Hakuta
  • Organizer: Physical Society of Japan, 74th Annual Meeting, 14 -17th March
  • Int'l Joint Research
• [Presentation] Two-mode interference in a photonic crystal nanofiber cavity (2018)
  • Author(s): J. Keloth, K. P. Nayak, J. Wang, M. Morinaga and K. Hakuta
  • Organizer: European Optical Society Biennial Meeting (EOSAM), 8-12th October
  • Int'l Joint Research
• [Presentation] Fano-type resonances and avoided crossing in a photonic crystal nanofiber cavity (2018)
  • Author(s): J. Keloth, K. P. Nayak, J. Wang, M. Morinaga and K. Hakuta
  • Organizer: Physical Society of Japan,73rd Annual Meeting, 9-12th September
  • Int'l Joint Research
• [Presentation] Stabilization of a centimeter-long photonic crystal nanofiber cavity under ultra-high vacuum condition (2018)
  • Author(s): K. P. Nayak, J. Wang, J. Keloth and K. Hakuta
  • Organizer: Physical Society of Japan,73rd Annual Meeting, 9-12th September
  • Int'l Joint Research
• [Presentation] Fano-type resonances and avoided crossing in a photonic crystal nanofiber cavity (2018)
  • Author(s): J. Keloth, K. P. Nayak, J. Wang, M. Morinaga, and K. Hakuta
  • Organizer: International Workshop on Photonics Polymer for Innovation (IWPPI), 15-18th October
• [Presentation] Investigation of Fano-type resonances in nanofiber based photonic crystal cavity (2018)
  • Author(s): K. P. Nayak, J. Keloth, M. Morinaga, and K. Hakuta
  • Organizer: SPIE Photonic West 2018
  • Int'l Joint Research / Invited
• [Presentation] Nanofiber quantum photonics (2017)
  • Author(s): K. P. Nayak, R. Yalla, J. Keloth, and K. Hakuta
  • Organizer: SPIE Photonic West, OPTO, Slow Light, Fast Light, and Opto-Atomic Precision Metrology X
  • Place of Presentation: San Francisco, California, United States
  • Year and Date: 2017-01-28
  • Int'l Joint Research / Invited
• [Presentation] Optical Nanofiber Cavity For Quantum Photonics (2017)
  • Author(s): K. P. Nayak, J. Keloth, J. Wang, and K. Hakuta
  • Organizer: The 24th Congress of the International Commission for Optics (ICO-24)
  • Int'l Joint Research
• [Presentation] Fabrication of a centimeter-long cavity on nanofiber for strong-coupling regime of cavity QED (2017)
  • Author(s): J. Keloth, K. P. Nayak, J. Wang, and K. Hakuta
  • Organizer: IEEE Photonics Conference (IPC 2017)
  • Int'l Joint Research
• [Presentation] Developing optical nanofiber cavity for a quantum interface (2017)
  • Author(s): K. P. Nayak
  • Organizer: International Symposium on Photonics and Optical Communications (ISPOC 2017)
  • Invited
• [Presentation] Poster Presentation: Fabrication of a centimeter-long cavity on a nanofiber for cavity QED (2017)
  • Author(s): J. Keloth, J. Wang, K. P. Nayak, and K. Hakuta
  • Organizer: Optical Nanofiber Applications: From Quantum to Bio Technologies (ONNA 2017)
• [Presentation] Poster Presentation: Optical nanofiber cavity for quantum photonics (2017)
  • Author(s): J. Keloth, K. P. Nayak, J. Wang, and K. Hakuta
  • Organizer: The Interdisciplinary Research and Global Outlook Conference (IRAGO 2017)
• [Presentation] Poster Presentation: Fabrication of few centimeter-long nanofiber and cavity formation using femtosecond laser (2016)
  • Author(s): J. Keloth, K. P. Nayak, H. Iida, and K. Hakuta
  • Organizer: International Workshop on Photonics Polymer for Innovation (IWPPI 2016)
  • Place of Presentation: Nasu, Tochigi, Japan
  • Year and Date: 2016-10-11
• [Presentation] Poster Presentation: Cavity quantum electrodynamics on a nanofiber (2016)
  • Author(s): R. Yalla, M. Sadgrove, K. P. Nayak, and K. Hakuta
  • Organizer: International Workshop on Photonics Polymer for Innovation (IWPPI 2016)
  • Place of Presentation: Nasu, Tochigi, Japan
  • Year and Date: 2016-10-11
• [Presentation] Poster Presentation: In-situ measurement of nanofiber diameter using an optical method (2016)
  • Author(s): J. Keloth, M. Sadgrove, R. Yalla, K. P. Nayak, and K. Hakuta
  • Organizer: International Workshop on Photonics Polymer for Innovation (IWPPI 2016)
  • Place of Presentation: Nasu, Tochigi, Japan
  • Year and Date: 2016-10-11
• [Presentation] Trapping Single Atoms on a Photonic Crystal Nanofiber (2016)
  • Author(s): K. P. Nayak, Yanqiang Guo, Jameesh Keloth, Tetsuo Kishimoto, and K. Hakuta
  • Organizer: JPS 71th Annual Meeting
  • Place of Presentation: Sendai, Japan
  • Year and Date: 2016-03-19
• [Presentation] Poster Presentation: Single atom on a photonic crystal nanofiber cavity (2015)
  • Author(s): Yanqiang Guo, Jameesh Keloth, K. P. Nayak, Tetsuo Kishimoto and K. Hakuta
  • Organizer: The 4th International Workshop on Microcavities and Their Applications (WOMA2015)
  • Place of Presentation: Hokkaido, Japan
  • Year and Date: 2015-12-01
• [Presentation] Optical nanofibers for quantum information application (2015)
  • Author(s): K. P. Nayak and K. Hakuta
  • Organizer: The 8th IEEE/ International Conference on Advanced Infocomm Technology (ICAIT 2015)
  • Place of Presentation: Hangzhou, China
  • Year and Date: 2015-10-25
  • Int'l Joint Research / Invited
• [Presentation] Poster Presentation: Atom Entanglement in Nanophotonic Cavity QED (2015)
  • Author(s): P. Samutpraphoot, T. Peyronel, C. Senko, M. Endres, A. Keesling, J. Thompson, T. Tiecke, K. P. Nayak, V. Vuletic, M. Lukin
  • Organizer: 46th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics (DAMOP 2015)
  • Place of Presentation: Ohio, USA
  • Year and Date: 2015-06-08
  • Int'l Joint Research
• [Presentation] Efficient fiber-optical interface for nanophotonic devices (2015)
  • Author(s): K. P. Nayak, T. G. Tiecke, J. D. Thompson, T. Peyronel, N. P. de Leon, V. Vuletic, and M. D. Lukin,
  • Organizer: Optical Nanofiber Applications: From Quantum to Bio Technologies (ONNA 2015)
  • Place of Presentation: Okinawa, Japan
  • Year and Date: 2015-05-25
• [Presentation] Poster Presentation: Light-matter interaction in the vicinity of a photonic crystal nanofiber cavity (2015)
  • Author(s): Jameesh Keloth, Pengfei Zhang, K. P. Nayak, K. Hakuta
  • Organizer: Optical Nanofiber Applications: From Quantum to Bio Technologies (ONNA 2015)
  • Place of Presentation: Okinawa, Japan
  • Year and Date: 2015-05-25