Controllable Quantum Turbulence

• Project/Area Number: 16K05461
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Okinawa Institute of Science and Technology Graduate University
• Principal Investigator: WHITE Angela 沖縄科学技術大学院大学, 量子システム研究ユニット, 研究員 (10750408)
• Co-Investigator(Kenkyū-buntansha): BUSCH Thomas 沖縄科学技術大学院大学, 量子システム研究ユニット, 教授 (30715272)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Discontinued (Fiscal Year 2018)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: chaos / Bose-Einstein condensate / vortex dynamics / quantum vortices / cold atoms / turbulence engineering

Outline of Annual Research Achievements

We continued to build up methods to study superfluid systems consisting of small-vortex numbers that are chaotic. We found methods to introduce chaotic dynamics in a controllable and experimentally accessible way and in doing this are developing a deeper understanding of chaos in vortex systems. We have studied how condensate size and vortex-vortex interactions influence the degree of chaos in confined Bose-Einstein condensates. We have come up with methods to scale our techniques up to larger condensate sizes which will be the subject of future work. We have discussed these results with the international research community are preparing a manuscript for publication to communicate these findings.

Research Products

• [Journal Article] Odd-petal-number states and persistent flows in spin-orbit-coupled Bose-Einstein condensates (2017)
  • Author(s): Angela C. White, Yongping Zhang, and Thomas Busch
  • Journal Title: Physical Review A Volume: 95 Issue: 4
  • DOI: 10.1103/physreva.95.041604
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Vinen turbulence via the decay of multicharged vortices in trapped atomic Bose-Einstein condensates (2017)
  • Author(s): A. Cidrim, A. C. White, A. J. Allen, V. S. Bagnato, and C. F. Barenghi
  • Journal Title: Physical Review A Volume: 96 Issue: 2 Pages: 023617-023617
  • DOI: 10.1103/physreva.96.023617
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Superfluidity in Bose-Einstein condensates beyond the standard azimuthal flow (2018)
  • Author(s): Angela White
  • Organizer: Chasing tornadoes: vorticity above, below and in the Lab
  • Invited
• [Presentation] Superfluidity in Bose-Einstein condensates beyond the standard azimuthal flow (2018)
  • Author(s): Angela White
  • Organizer: Chasing Tornadoes: Vorticity above below and in the lab
  • Invited
• [Presentation] Rotational properties of multi-component superfluid Bose-Einstien condensates (2017)
  • Author(s): Angela White
  • Organizer: 72nd Annual Meeting (2017) The Physical Society of Japan
  • Place of Presentation: Osaka University, Japan
  • Year and Date: 2017-03-17
• [Presentation] Characterising chaotic dynamics of quantum vortices in Bose-Einstein condensates (2017)
  • Author(s): Andreas Thomasen
  • Organizer: 72nd Annual Meeting (2017) The Physical Society of Japan
  • Place of Presentation: Osaka University, Japan
  • Year and Date: 2017-03-17
• [Presentation] Necklace-like states in toroidally trapped Rashba spin-orbit coupled Bose-Einstein condensates (2017)
  • Author(s): Angela White
  • Organizer: Bose-Einstein condensation 2017 Frontiers in Quantum Gases
• [Presentation] Superflows in multi-component Bose-Einstein condensates (2016)
  • Author(s): Angela White
  • Organizer: Invited Seminar at The University of Queensland, Australia
  • Place of Presentation: The University of Queensland, Australia
  • Year and Date: 2016-12-20
  • Invited
• [Presentation] Emergence of classical rotation in superfluid Bose-Einstein condensates (2016)
  • Author(s): Angela White
  • Organizer: Multicomponent Atomic condensates and Rotational dynamics (MACRO) conference and JQC syposium
  • Place of Presentation: Newcastle University, UK
  • Year and Date: 2016-09-13
• [Funded Workshop] Mini Vortex Meeting (2017)