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We report the observation of microwave coherent control of rotational states of ultracold $^{85}$Rb$^{133}$Cs molecules formed in their vibronic ground state by short-range photoassociation. Molecules are formed in the single rotational…

Atomic Physics · Physics 2020-07-10 Zhonghua Ji , Ting Gong , Yonglin He , Jeremy M. Hutson , Yanting Zhao , Liantuan Xiao , Suotang Jia

Ultracold molecules offer a broad variety of applications, ranging from metrology to quantum computing. However, forming "real" ultracold molecules, {\it i.e.} in deeply bound levels, is a very difficult proposition. Here, we show how…

Atomic Physics · Physics 2009-11-13 Philippe Pellegrini , Marko Gacesa , Robin Côté

Ultracold assembly of diatomic molecules has enabled great advances in controlled chemistry, ultracold chemical physics, and quantum simulation with molecules. Extending the ultracold association to triatomic molecules will offer many new…

Atomic Physics · Physics 2022-03-10 Huan Yang , Xin-Yao Wang , Zhen Su , Jin Cao , De-Chao Zhang , Jun Rui , Bo Zhao , Chun-Li Bai , Jian-Wei Pan

Radiative emission during cold collisions between trapped laser-cooled Rb atoms and alkaline-earth ions (Ca$^+$, Sr$^+$, Ba$^+$) and Yb$^+$, and between Li and Yb$^+$, are studied theoretically, using accurate effective-core-potential based…

Atomic Physics · Physics 2015-06-23 Humberto Da Silva , Maurice Raoult , Mireille Aymar , Olivier Dulieu

We investigate novel f-wave superfluids of fermionic polar molecules in a two-dimensional bilayer system with dipole moments polarized perpendicular to the layers and in opposite directions in different layers. The solution of the BCS gap…

Quantum Gases · Physics 2017-09-04 Abdelaali Boudjemaa

A mean field theory of expanding hybrid atom-molecule Bose-Einstein condensates is applied to the recent MPI experiments on ${}^{87}$Rb that demonstrated the formation of ultracold molecules due to Feshbach resonance. The subsequent…

Soft Condensed Matter · Physics 2007-05-23 V. A. Yurovsky , A. Ben-Reuven

Intense beams of cold and slow molecules are produced by supersonic expansion out of a rapidly rotating nozzle, as first demonstrated by Gupta and Herschbach. An improved setup is presented that allows to accelerate or decelerate cold…

Atomic Physics · Physics 2011-12-19 M. Strebel , F. Stienkemeier , M. Mudrich

We propose a method to trap polar molecules with the electrical force induced by the surface acoustic wave (SAW) on piezoelectric materials. In this approach, the electrical force is perpendicular to the moving direction of the polar…

Quantum Physics · Physics 2025-04-18 Haijin Ding , Re-Bing Wu , Yu-xi Liu

We design dipolar quantum many-body Hamiltonians that will facilitate the realization of exotic quantum phases under current experimental conditions achieved for polar molecules. The main idea is to modulate both single-body potential…

Carbon monoxide molecules in their electronic, vibrational, and rotational ground state are highly attractive for trapping experiments. The optical or ac electric traps that can be envisioned for these molecules will be very shallow,…

We produce an ultracold and dense sample of rovibronic ground state Cs_2 molecules close to the regime of quantum degeneracy, in a single hyperfine level, in the presence of an optical lattice. The molecules are individually trapped, in the…

Ultracold metastable RbCs molecules are observed in a double species MOT through photoassociation near the Rb(5S$_{1/2}$)+Cs(6P$_{3/2}$) dissociation limit followed by radiative stabilization. The molecules are formed in their lowest…

Atomic Physics · Physics 2017-09-13 C. Gabbanini , O. Dulieu

We study the process of production of ultracold molecules from ultracold atoms using a sinusoidally oscillating magnetic field modulation. When the magnetic field is resonant roughly with the molecular binding energy, Shapiro-like…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Bin Liu , Li-Bin Fu , Jie Liu

We study the use of an optical Feshbach resonance to modify the p-wave interaction between ultracold polarized Yb-171 spin-1/2 fermions. A laser exciting two colliding atoms to the 1S_0 + 3P_1 channel can be detuned near a purely-long-range…

Atomic Physics · Physics 2015-03-17 Krittika Goyal , Iris Reichenbach , Ivan Deutsch

We investigate the microwave spectra of ultracold alkali metal dimers in magnetic, electric and combined fields, taking account of the hyperfine structure due to the nuclear spins. We consider the molecules 41K87Rb and 7Li133Cs, which are…

Chemical Physics · Physics 2015-05-14 Hong Ran , J. Aldegunde , Jeremy M. Hutson

We investigate the two- and many-body physics of the ultracold polar molecules dressed by dual microwaves with distinct polarizations. Using Floquet theory and multichannel scattering calculations, we identify a regime with the largest…

Quantum Gases · Physics 2025-01-16 Fulin Deng , Xinyuan Hu , Wei-Jian Jin , Su Yi , Tao Shi

Photoexcitation rates for creation of ultralong-range Rydberg molecules (ULRM) with 31$\lesssim n \lesssim41$ in both ground and excited vibrational levels in cold ($T\sim900$~nK) gases of polarized and unpolarized $^{87}$Sr are presented.…

Atomic Physics · Physics 2019-12-11 R. Ding , S. K. Kanungo , J. D. Whalen , T. C. Killian , F. B. Dunning , S. Yoshida , J. Burgdörfer

This chapter summarizes the properties of near-threshold molecular states that can be formed from ultracold atoms. The properties of the states for a single potential are characterized for different partial waves using the concepts of…

Atomic Physics · Physics 2009-02-11 Paul S. Julienne

We report the successful production of an ultracold sample of absolute ground-state $^{23}$Na$^{87}$Rb molecules. Starting from weakly-bound Feshbach molecules formed via magneto-association, the lowest rovibrational and hyperfine level of…

Heavy polar diatomic molecules are the leading candidates in searches for the permanent electric dipole moment of the electron (eEDM). Next-generation eEDM search experiments ideally require extremely large coherence times, in large…

Atomic Physics · Physics 2019-04-10 A. Sunaga , V. S. Prasannaa , A. C. Vutha , M. Abe , M. Hada , B. P. Das