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Controlling vortex rings in Bose--Einstein condensates

Research Project

Project/Area Number 17J01488
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Atomic/Molecular/Quantum electronics
Research InstitutionOkinawa Institute of Science and Technology Graduate University

Principal Investigator

SCHLOSS James Ryan  沖縄科学技術大学院大学, 科学技術研究科, 特別研究員(DC1)

Project Period (FY) 2017-04-26 – 2020-03-31
Project Status Discontinued (Fiscal Year 2019)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2019: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2018: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2017: ¥700,000 (Direct Cost: ¥700,000)
KeywordsBEC / Superfluid / GPU / Computation / Computing / Turbulence / Quantum Systems / Vortex Dynamics
Outline of Annual Research Achievements

This project has resulted in novel software to simulate a variety of physical systems, with a focus on superfluid Bose--Einstein Condensates (BECs) and their superfluid dynamics. In particular, it has developed GPUE, the Gross-Pitaevskii Equation solver with Graphics Processing Units, which can be used for a huge variety of physical systems. With dynamic expression tree syntax parsing, users can input whatever equations they would like to solve into the system, and these will be solved via the pseudo-spectral split-step Fourier method.

A large portion of this year's work went into simulating a particular system where a toroidal superfluid BEC is trapped around an optical nanofiber. This system allows for the creation, control, and detection of superfluid vortex structures via the generation of artificial magnetic fields with a tapered optical nanofiber. This is the first time vortex rings and vortes ring-like structures have been generated in this way and this study should allow for several future studies to really pinpoint how and why superfluid vortices act as they do in turbulent systems.

Overall, this year has been successful in finishing up the goals set out by this project initially.

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (4 results)

All 2020 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Controlled creation of three-dimensional vortex structures in Bose--Einstein condensates using artificial magnetic fields2020

    • Author(s)
      James Schloss, Peter Barnett, Rashi Sachdeva, Thomas Busch
    • Journal Title

      Physical Review Fluids (submitted)

      Volume: NA

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Chaotic few-body vortex dynamics in rotating Bose-Einstein condensates2019

    • Author(s)
      Tiantian Zhang, James Schloss, Andreas Thomasen, Lee James O'Riordan, Thomas Busch, Angela White
    • Journal Title

      Physical Review Fluids

      Volume: 4 Pages: 054701-054701

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] GPUE: Graphics Processing Unit Gross--Pitaevskii Equation solver2018

    • Author(s)
      James Schloss, Lee James O'Riordan
    • Journal Title

      Journal of Open Source Software

      Volume: 3 Issue: 32 Pages: 1037-1037

    • DOI

      10.21105/joss.01037

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Controlling vortex rings in Bose-Einstein condensates using artificial gauge fields2017

    • Author(s)
      James Schloss, Rashi Sachdeva, Lee J. O'Riordan, Thomas Busch
    • Organizer
      48th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

URL: 

Published: 2017-05-25   Modified: 2024-03-26  

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