2017/05/19 by Yanting Cheng, Ren Zhang, Peng Zhang +1 · 28 citations
Physics and Astronomy · #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Coupling (piping) #Fermion #Ground state #Impurity #Kondo effect #Kondo model #Materials science #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Quantum, superfluid, helium dynamics #Resonance (particle physics) #Scattering #Spin (aerodynamics) #Transverse plane #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.96.063605
published in Physical Review A 96(6) (American Physical Society) · 6 pages, 5 figures
arxiv created 2017/05/19 · openalex created_date 2017/06/05 · openalex publication_date 2017/12/04 · arxiv updated 2017/12/08 · openalex updated_date 2026/08/05
The Kondo effect describes the spin-exchange interaction between localized impurities and itinerant fermions. The ultracold alkaline-earth atomic gas provides a natural platform for quantum simulation of the Kondo model, utilizing its long-lived clock state and the nuclear-spin exchange interaction between clock state and ground state. One of the key issue now is whether the Kondo temperature can be high enough to be reached in current experiments, for which we have proposed to use transverse confinement to confine atoms into a one-dimensional tube and to use the confinement-induced resonance to enhance Kondo coupling. In this work, we further consider the (1+0)-dimensional scattering problem when the clock state is further confined by an axial harmonic confinement. We show that this axial confinement for the clock-state atoms not only plays a role for localizing them, but can also act as an additional control knob to reach the confinement-induced resonance. We show that, in the presence of both the transverse and the axial confinements, the confinement-induced resonance can be reached in the practical conditions and the Kondo effect can be attainable in this system.