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We report on the optical polarizability of microwave-shielded ultracold NaCs molecules in an optical dipole trap. While dressing a pair of rotational states with a microwave field, we observe a marked dependence of the optical…

量子气体 · 物理学 2025-01-16 Siwei Zhang , Weijun Yuan , Niccolò Bigagli , Claire Warner , Ian Stevenson , Sebastian Will

We show that ultracold polar diatomic or linear molecules, oriented in an external electric field and mutually coupled by dipole-dipole interactions, can be used to realize the exact Heisenberg XYZ, XXZ and XY models without invoking any…

量子物理 · 物理学 2022-11-09 Wenjing Yue , Qi Wei , Sabre Kais , Bretislav Friedrich , Dudley Herschbach

We present a versatile electric trap for the exploration of a wide range of quantum phenomena in the interaction between polar molecules. The trap combines tunable fields, homogeneous over most of the trap volume, with steep gradient fields…

量子物理 · 物理学 2012-08-02 B. G. U. Englert , M. Mielenz , C. Sommer , J. Bayerl , M. Motsch , P. W. H. Pinkse , G. Rempe , M. Zeppenfeld

We show that the electric dipole-dipole interaction between a pair of polar molecules undergoes an all-out transformation when superimposed by a far-off resonant optical field. The combined interaction potential becomes tunable by variation…

原子物理 · 物理学 2015-05-30 Mikhail Lemeshko , Bretislav Friedrich

We demonstrate the long-term ($<$ 1 minute) trapping of Stark-decelerated OH radicals in their $X~^{2}\Pi _{3/2}~(\nu = 0,~J = 3/2,~M_{J} = 3/2,~f)$ state in a permanent magnetic trap. The trap environment was cryogenically cooled to a…

化学物理 · 物理学 2019-08-05 Dominik Haas , Claudio von Planta , Thomas Kierspel , Dongdong Zhang , Stefan Willitsch

The physics of critical phenomena in a many-body system far from thermal equilibrium is an interesting and important issue to be addressed both experimentally and theoretically. The trapped cold atoms have been actively used as a clean and…

原子物理 · 物理学 2017-09-13 Geol Moon , Myoung-Sun Heo , Yonghee Kim , Heung-Ryoul Noh , Wonho Jhe

Trapping of atoms and molecules in electrostatic, magnetic and optical traps has enabled studying atomic and molecular interactions on a timescale of many seconds, allowing observations of ultra-cold collisions and reactions. Here we report…

原子物理 · 物理学 2020-12-02 Michael Karpov , Martin Pitzer , Yair Segev , Julia Narevicius , Edvardas Narevicius

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,…

Selection of "magic" trapping conditions with ultracold atoms or molecules, where pairs of internal states experience identical trapping potentials, brings substantial benefits to precision measurements and quantum computing schemes.…

量子物理 · 物理学 2011-01-04 Svetlana Kotochigova , David DeMille

We theoretically study collisions between ultracold polar molecules that are polarized by microwave or static electric fields. We systematically study the dependence on field strength, microwave polarization, and detuning from rotational…

原子物理 · 物理学 2022-02-09 Tijs Karman , Zoe Z. Yan , Martin Zwierlein

We investigate the properties of two interacting ultracold polar molecules described as distinguishable quantum rigid rotors, trapped in a one-dimensional harmonic potential. The molecules interact via a multichannel two-body contact…

原子物理 · 物理学 2018-07-03 Anna Dawid , Maciej Lewenstein , Michał Tomza

We consider how trapped molecules can be sympathetically cooled by ultracold atoms. As a prototypical system, we study LiH molecules co-trapped with ultracold Li atoms. We calculate the elastic and inelastic collision cross sections of LiH…

A detailed treatment of an electro-optical trap for polar molecules, realized by embedding an optical trap within a uniform electrostatic field, is presented and the trap's properties analyzed and discussed. The electro-optical trap offers…

原子物理 · 物理学 2022-06-15 Bretislav Friedrich

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…

化学物理 · 物理学 2015-05-14 Hong Ran , J. Aldegunde , Jeremy M. Hutson

We discuss techniques to engineer effective long-range interactions between polar molecules using external static electric and microwave fields. We consider a setup where molecules are trapped in a two-dimensional pancake geometry by a…

量子物理 · 物理学 2009-11-13 A. Micheli , G. Pupillo , H. P. Büchler , P. Zoller

The development of the magneto-optical trap revolutionized the fields of atomic and quantum physics by providing a simple method for the rapid production of ultracold, trapped atoms. A similar technique for producing a diverse set of dense,…

原子物理 · 物理学 2014-04-17 Matthew T. Hummon , Mark Yeo , Benjamin K. Stuhl , Alejandra L. Collopy , Yong Xia , Jun Ye

An alternating gradient electric guide provides a way to transport a wide variety of polar molecules, including those in high-field seeking states. We investigate the motion of polar molecules in such a guide by measuring the transmission…

原子物理 · 物理学 2015-05-13 T. E. Wall , S. Armitage , J. J. Hudson , B. E. Sauer , J. M. Dyne , E. A. Hinds , M. R. Tarbutt

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…

量子物理 · 物理学 2025-04-18 Haijin Ding , Re-Bing Wu , Yu-xi Liu

We show that a ferro-electric quantum phase transition can be driven by the dipolar interaction of polar molecules in the presence a micro-wave field. The obtained ferro-electricity crucially depends on the harmonic confinement potential,…

量子气体 · 物理学 2015-05-13 Chien-Hung Lin , Yi-Ting Hsu , Hao Li , Daw-Wei Wang

We demonstrate the polarization of electron orbital angular momentum (OAM) in neutral atoms by integrating the Zeeman effect with attosecond transient absorption spectroscopy (ATAS). Using density matrix simulations, we show that in a…

原子物理 · 物理学 2025-07-04 Hongtao Hu , Sebastian Mai , Peng Peng , Andrius Baltuška , Xinhua Xie