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Rydberg atoms at sub-micron distance with overlapping electronic clouds

Research Project

Project/Area Number 19K23429
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
Research InstitutionInstitute for Molecular Science

Principal Investigator

DE LESELEUC Sylvain  分子科学研究所, 光分子科学研究領域, 助教 (10844186)

Project Period (FY) 2019-08-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsQuantum physics / Rydberg atoms / Dipole dipole coupling / Optical tweezers / Ultracold atoms / Ultrafast excitation / Ultracold atom / Dipole-dipole / Optical Tweezers
Outline of Research at the Start

The key question investigated here is: What happens to two Rydberg atoms (atoms in highly excited states with giant electronic clouds) when they are close enough for the two electronic orbitals to overlap ?

Outline of Final Research Achievements

We trap Rubidium87 atoms in optical tweezers, excite the atoms to Rydberg states with picosecond pulsed lasers and study the ultrafast (nanosecond-scale) dynamics between the atoms which is driven by the dipole-dipole interaction.
First, we succeeded in constructing a ultra-high vacuum experimental setup, forming laser-cooled cloud of Rb atoms, and trapping and imaging single Rb atoms in an array of up to 800 holographic tweezers. Then, we developed novel holographic methods for bringing two atoms as close as 1.2 micrometer, and applied advanced cooling techniques to bring the atoms in the motional quantum ground-state of the tweezers. Finally, we realized a new ultrafast (10 ps) excitation scheme to efficiently bring the atoms into a Rydberg state. The preparation success has been improved from 10 % to 75 %.
Combining all these techniques, we observed a dipole-dipole driven energy exchange between two close-by Rydberg atoms, in a regime unexplored so far.

Academic Significance and Societal Importance of the Research Achievements

This project demonstrated that it is possible to prepare and use ultracold atoms in large array of optical tweezers. Moreover, for the first time, we demonstrated a coherent interaction-driven dynamics between two single atoms, in only a few nanosecond.

Report

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

    (11 results)

All 2022 2021 2020 2019 Other

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Remarks (1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Ultrafast Many-Body Dynamics in an Ultracold Rydberg-Excited Atomic Mott Insulator2022

    • Author(s)
      V. Bharti, S. Sugawa, M. Mizoguchi, M. Kunimi, Y. Zhang, S. de Leseleuc, T. Tomita, T. Franz, M. Weidemuller, K. Ohmori
    • Journal Title

      Under review (currently preprint)

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Ultrafast energy exchange between two single Rydberg atoms on the nanosecond timescale2021

    • Author(s)
      Yeelai Chew, Takafumi Tomita, Tirumalasetty Panduranga Mahesh, Seiji Sugawa, Sylvain de Leseleuc, Kenji Ohmori
    • Journal Title

      Under review (currently preprint)

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Presentation] Ultrafast energy exchange between two single Rydberg atoms on the nanosecond timescale2022

    • Author(s)
      Sylvain DE LESELEUC
    • Organizer
      GiRyd Status Workshop 2022
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Raman sideband cooling of 800 atoms to the quantum ground-state of optical tweezers2022

    • Author(s)
      Sylvain DE LESELEUC
    • Organizer
      JPS March Meeting 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Many-body physics with Rydberg atoms in arrays of optical tweezers2021

    • Author(s)
      Sylvain DE LESELEUC
    • Organizer
      Workshop of the University of Tokyo
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Many body phyics with arrays of optical tweezers2021

    • Author(s)
      DE LESELEUC Sylvain
    • Organizer
      New Developments of Applied Physics. Workshop of University of Tokyo
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Observation of a symmetry-protected topological phase of interacting bosons with Rydberg atoms2020

    • Author(s)
      DE LESELEUC Sylvain
    • Organizer
      IOP Publishing. A VIRTUAL CONFERENCE QUANTUM2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quantum simulation and computation with assembled arrays of Rydberg atoms2019

    • Author(s)
      DE LESELEUC Sylvain
    • Organizer
      The 7th IMS Mesoscopic Science Forum
    • Related Report
      2019 Research-status Report
  • [Remarks] Sylvain DE LESELEUC page

    • URL

      https://groups.ims.ac.jp/organization/ohmori_g/sylvain-e.html

    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] 量子シミュレータおよび量子シミュレーション方法2021

    • Inventor(s)
      大森 賢治, Sylvain de Leseleuc, 他6人
    • Industrial Property Rights Holder
      浜松ホトニクス株式会社, 大学共同利用機関法人自然科学研究機構
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-145826
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] 量子シミュレータおよび量子シミュレーション方法2021

    • Inventor(s)
      大森 賢治, Sylvain de Leseleuc, 他6人
    • Industrial Property Rights Holder
      浜松ホトニクス株式会社, 大学共同利用機関法人自然科学研究機構
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-145812
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

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Published: 2019-09-03   Modified: 2023-01-30  

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