2024/07/14 更新

写真a

ケラー ティム
ケラー ティム
所属
理工学術院 理工学術院総合研究所
職名
次席研究員(研究院講師)
 

論文

  • Fermionization of a few-body Bose system immersed into a Bose-Einstein condensate

    Tim Keller, Thomás Fogarty, Thomas Busch

    SciPost Physics   15 ( 3 )  2023年09月

    DOI

  • Self-Pinning Transition of a Tonks-Girardeau Gas in a Bose-Einstein Condensate

    Tim Keller, Thomás Fogarty, Thomas Busch

    Physical Review Letters   128 ( 5 )  2022年01月

    DOI

    Scopus

    3
    被引用数
    (Scopus)
  • Adiabatic critical quantum metrology cannot reach the Heisenberg limit even when shortcuts to adiabaticity are applied

    Karol Gietka, Friederike Metz, Tim Keller, Jing Li

    Quantum    2021年07月

    DOI

  • Feshbach engine in the Thomas-Fermi regime

    Tim Keller

    Physical Review Research   2 ( 3 )  2020年08月

    DOI

  • Quenches across the self-organization transition in multimode cavities

    Tim Keller, Valentin Torggler, Simon B Jäger, Stefan Schütz, Helmut Ritsch, Giovanna Morigi

    New Journal of Physics   20 ( 2 ) 025004 - 025004  2018年02月

    DOI

    Scopus

    23
    被引用数
    (Scopus)
  • Phases of cold atoms interacting via photon-mediated long-range forces

    Tim Keller, Simon B Jäger, Giovanna Morigi

    Journal of Statistical Mechanics: Theory and Experiment   2017 ( 6 ) 064002 - 064002  2017年06月

    DOI

    Scopus

    10
    被引用数
    (Scopus)
  • Probing the out-of-equilibrium dynamics of two interacting atoms

    Tim Keller, Thomás Fogarty

    Physical Review A   94 ( 6 )  2016年

    DOI

▼全件表示

共同研究・競争的資金等の研究課題

  • 相互作用する系の量子熱力学

    日本学術振興会  科学研究費助成事業

    研究期間:

    2021年04月
    -
    2023年03月
     

    Keller Tim

     概要を見る

    The work on the self-pinning transition for a two component quasi-one-dimensional quantum gas was extended to the case of finite intra-species repulsion for the component immersed into the Bose-Einstein condensate (BEC), going beyond the previously studied Tonks-Girardeau limit of infinite intra-species interaction. If the finite repulsion is weak compared to the inter-species interaction with the BEC, the immersed component can persist in a coherent superfluid state. Extensive simulations of the numerically amenable case of two and three immersed atoms were used to calculate the phase diagram of the system. The superfluid and self-pinned phases are connected via a first-order phase transition that is also captured by the effective analytical model developed previously. The model predicts the transition to coincide with the two-component miscibility criterion in the limit of large particle numbers in the immersed component.
    The results are described in a preprint on arXiv in collaboration with Dr. Thomas Fogarty and Prof. Thomas Busch that has been accepted for publication in SciPost Physics.
    During FY 2022 I also presented posters at the domestic conference "Ultracold Atoms Japan" in Okinawa in April 2022 as well as at the international conference "FINESS" in St. Martin, Germany, in May 2022.