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We explore the anisotropic nature of Feshbach resonances in the collision between ultracold magnetic submerged-shell dysprosium atoms, which can only occur due to couplings to rotating bound states. This is in contrast to well-studied…

Atomic Physics · Physics 2015-06-04 Alexander Petrov , Eite Tiesinga , Svetlana Kotochigova

We theoretically evaluate the feasibility to form magnetically-tunable Feshbach molecules in collisions between fermionic $^6$Li atoms and bosonic metastable $^{174}$Yb($^3$P$_2$) atoms. In contrast to the well-studied alkali-metal atom…

Atomic Physics · Physics 2015-06-23 Alexander Petrov , Constantinos Makrides , Svetlana Kotochigova

We have observed and located more than 60 magnetic field-induced Feshbach resonances in ultracold collisions of ground-state $^{133}$Cs atoms. These resonances are associated with molecular states with up to four units of rotational angular…

Soft Condensed Matter · Physics 2007-05-23 Cheng Chin , Vladan Vuletic , Andrew J. Kerman , Steven Chu , Eite Tiesinga , Paul J. Leo , Carl J. Williams

We have investigated Feshbach resonances in collisions of high-spin atoms such as Er and Dy with closed-shell atoms such as Sr and Yb, using coupled-channel scattering and bound-state calculations. We consider both low-anisotropy and…

Atomic Physics · Physics 2020-10-14 Matthew D. Frye , Simon L. Cornish , Jeremy M. Hutson

We observe a magnetic Feshbach resonance in a collision between the ground and metastable states of two-electron atoms of ytterbium (Yb). We measure the on-site interaction of doubly-occupied sites of an atomic Mott insulator state in a…

Quantum Gases · Physics 2013-05-01 Shinya Kato , Seiji Sugawa , Kosuke Shibata , Ryuta Yamamoto , Yoshiro Takahashi

Magnetic Feshbach resonances are an invaluable tool for controlling ultracold atoms and molecules. They can be used to tune atomic interactions and have been used extensively to explore few- and many-body phenomena. They can also be used…

We report numerically exact quantum scattering calculations on magnetic Feshbach resonances in ultracold, strongly anisotropic atom-molecule [Rb($^2$S) + SrF($^2\Sigma^+$)] collisions based on state-of-the-art ab initio potential energy…

Magnetic Feshbach resonances play a central role in experimental research of atomic gases at ultracold temperatures, as they allow one to control the microscopic interactions between ultracold atoms by tuning an applied magnetic field.…

Atomic Physics · Physics 2014-04-11 Alisdair O. G. Wallis , Roman V. Krems

Magnetic Feshbach resonances have allowed great success in the production of ultracold diatomic molecules from bi-alkali mixtures, but have so far eluded observation in mixtures of alkali and alkaline-earth-like atoms. Inelastic collisional…

We report a unique feature of magnetic field Feshbach resonances in which atoms collide with non-zero orbital angular momentum. P-wave ($l=1$) Feshbach resonances are split into two components depending on the magnitude of the resonant…

Atomic Physics · Physics 2009-11-10 C. Ticknor , C. A. Regal , D. S. Jin , J. L. Bohn

We investigate magnetically tunable Feshbach resonances between ultracold europium atoms and between europium and alkali-metal atoms using multichannel quantum scattering calculations. For ultracold gases of europium atoms both homonuclear…

Atomic Physics · Physics 2018-10-02 Klaudia Zaremba-Kopczyk , Piotr S. Żuchowski , Michał Tomza

We consider the magnetically tunable Feshbach resonances that may exist in ultracold mixtures of molecules in $^2\Sigma$ states and alkali-metal atoms. We focus on Rb+CaF as a prototype system. There are likely to be Feshbach resonances…

Atomic Physics · Physics 2023-06-05 Robert C. Bird , Michael R. Tarbutt , Jeremy M. Hutson

Magnetically tunable Feshbach resonances exist in ultracold collisions between atoms in $^2$S and $^3$P$_0$ states, such as an alkali-metal atom colliding with Yb or Sr in a clock state. We investigate the mechanisms of these resonances and…

Atomic Physics · Physics 2023-02-15 Bijit Mukherjee , Matthew D. Frye , Jeremy M. Hutson

We investigate magnetically tunable Feshbach resonances in ultracold collisions between ground-state Yb and Cs atoms, using coupled-channel calculations based on an interaction potential recently determined from photoassociation…

We discover several magnetic Feshbach resonances in collisions of ultracold K(39) atoms, by studying atom losses and molecule formation. Accurate determination of the magnetic-field resonance locations allows us to optimize a quantum…

Atomic Physics · Physics 2009-11-13 C. D'Errico , M. Zaccanti , M. Fattori , G. Roati , M. Inguscio , G. Modugno , A. Simoni

The effects of combined external electric and magnetic fields on elastic collisions in ultracold Li--Rb mixtures is studied using recently obtained, experimentally verified potentials. Our analysis provides both quantitative predictions for…

Other Condensed Matter · Physics 2009-09-14 Zhiying Li , Kirk W. Madison

We have investigated magnetically tunable Feshbach resonances in ultracold collisions of Rb with Yb in its metastable $^3$P$_2$ and $^3$P$_0$ states, using coupled-channel scattering and bound-state calculations. For the $^3$P$_2$ state, we…

Atomic Physics · Physics 2022-02-11 Bijit Mukherjee , Matthew D. Frye , Jeremy M. Hutson

Feshbach resonances are the essential tool to control the interaction between atoms in ultracold quantum gases. They have found numerous experimental applications, opening up the way to important breakthroughs. This Review broadly covers…

Other Condensed Matter · Physics 2010-05-04 Cheng Chin , Rudolf Grimm , Paul Julienne , Eite Tiesinga

We discuss the low energy shape oscillations of a magnetic trapped atomic condensate including the spin dipole interaction. When the nominal isotropic s-wave interaction strength becomes tunable through a Feshbach resonance (e.g. as for…

Superconductivity · Physics 2009-11-07 S. Yi , L. You

Ultracold molecules provide opportunities for exploring quantum matter, chemical dynamics and information processing thanks to their rich interactions, which can be controlled by external fields. Magnetic fields tune interactions through…

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