Mediated Interaction between Ions in Quantum Degenerate Gases

Ding，Shanshan1; Drewsen，Michael1; Arlt，Jan J.1; Bruun，G. M.1,2

2022-10-07

10.1103/PhysRevLett.129.153401

PHYSICAL REVIEW LETTERS   Impact Factor & Quartile

0031-9007

1079-7114

We explore the interaction between two trapped ions mediated by a surrounding quantum degenerate Bose or Fermi gas. Using perturbation theory valid for weak atom-ion interaction, we show analytically that the interaction mediated by a Bose gas has a power-law behavior for large distances whereas it has a Yukawa form for intermediate distances. For a Fermi gas, the mediated interaction is given by a power law for large density and by a Ruderman-Kittel-Kasuya-Yosida form for low density. For strong atom-ion interaction, we use a diagrammatic theory to demonstrate that the mediated interaction can be a significant addition to the bare Coulomb interaction between the ions, when an atom-ion bound state is close to threshold. Finally, we show that the induced interaction leads to substantial and observable shifts in the ion phonon frequencies.

SCI

English

NI Journal Papers

Corresponding

Danish National Research Foundation through the Center of Excellence[DNRF156] ; Independent Research Fund Denmark-Natural Sciences[DFF -8021-00233B.]

Physics

Physics, Multidisciplinary

WOS:000898621400005

AMER PHYSICAL SOC

PHYSICS

2-s2.0-85139733786

Scopus

1.Center for Complex Quantum Systems,Department of Physics and Astronomy,Aarhus University,Aarhus C,Ny Munkegade,DK-8000,Denmark
2.Shenzhen Institute for Quantum Science and Engineering,Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China

Ding，Shanshan,Drewsen，Michael,Arlt，Jan J.,et al. Mediated Interaction between Ions in Quantum Degenerate Gases[J]. PHYSICAL REVIEW LETTERS,2022,129(15).

Ding，Shanshan,Drewsen，Michael,Arlt，Jan J.,&Bruun，G. M..(2022).Mediated Interaction between Ions in Quantum Degenerate Gases.PHYSICAL REVIEW LETTERS,129(15).

Ding，Shanshan,et al."Mediated Interaction between Ions in Quantum Degenerate Gases".PHYSICAL REVIEW LETTERS 129.15(2022).