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Using the Feshbach resonance, one can tune the attractive two-body interaction from weak to strong and thereby make a. SPECTROSCOPY ON EXTREMELY WEAKLY-BOUND MOLECULES: COOPER PAIRS AND EFIMOV TRIMERS CHENG CHIN, The James Franck institute and the Department of Physics, University of Chicago, Chicago, IL, 60637. Feshbach resonances occur when the collision radio frequency transitions on weakly bound ultracold molecules energy of two free atoms coincides with that of a quasi-bound molecular state5–7. Arango2,c) 1PULSE Institute and Department of Chemistry, Stanford University, Stanford, California 94305, USA 2Department of Chemical Sciences, Universidad Icesi, Cali, Colombia. Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and the coupled-channel model, T. The ﬁrst homonuclear ones were created in / 48, heteronuclear mole-. Ultracold Fermionic Atoms Team up as Molecules:.

Approach to chaos in ultracold atomic radio frequency transitions on weakly bound ultracold molecules and molecular physics: Statistics of near-threshold bound states for Li+CaH and Li+CaF. 2, weakly bound molecules were associated from ultracold atoms via Feshbach reso-nances and were subsequently coherently transferred into the absolute rovibrational ground state via a two-photon stimulated rapid adiabatic passage (STIRAP) 11–15. THE JOURNAL OF CHEMICAL PHYSICS 149,Heuristic optimization of analytic laser transitions pulses for vibrational stabilization of ultracold KRb Ruben D. 44, where g denotes a nuclear gyromagnetic ratio, at the level of 7310−16/yrf8g. We demonstrate microwave dressing on ultracold, fermionic 23 Na 40 K ground-state molecules and observe resonant dipolar collisions with cross sections exceeding three times the s-wave unitarity limit. We develop a time‐dependent collision theory based on two channel model potentials to study the atom–molecule population transfer induced by a single‐color radio frequency field in an ultracold 87 Rb gas. Kotochigova,2 and Jun Ye1 1JILA, National Institute of Standards and Technology and radio frequency transitions on weakly bound ultracold molecules University of Colorado, Boulder, Colorado, USA 2Physics radio frequency transitions on weakly bound ultracold molecules Department, Temple University, Philadelphia, Pennsylvania, USA (Received 13 August ; published 29 January ).

The Efimov scenario is a universal three-body effect addressing many areas of modern quantum physics. Ultracold molecules trapped on an optical lattice have previously been radio frequency transitions on weakly bound ultracold molecules proposed as promising candidates for quantum computation 10 and quantum simulation of spin-lattice models 1,11,12. Palao,2,3 Ronnie Kosloff,2 and Fran&231;oise Masnou-Seeuws1 1Laboratoire Aim&233; Cotton, CNRS, B&226;timent 505, Campus d’ Orsay, 91405 Orsay Cedex, France 2Department of Physical Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 91904, Israel. S Ospelkaus, KK Ni, D Wang, MHG De Miranda, B Neyenhuis,. Molecule dissociation experiments at MIT 31, 51 provided a lower bound of 822 radio frequency transitions on weakly bound ultracold molecules radio frequency transitions on weakly bound ultracold molecules G for the resonance point.

molecules Article Bichromatic Photoassociation Spectroscopy for the Determination of Rotational. . In a next step these Feshbach molecules should be transferred to the rovibronic and hyperfine groundstate of the molecule via stimulated Raman adiabatic passage (STIRAP). Recent experimental advances enabled the realization of mobile impurities immersed in a Bose-Einstein condensate (BEC) of ultracold atoms. Creating Feshbach resonances for ultracold molecule formation with radio-frequency fields. It plays an important role in the transition between few- and many-body physics and has enabled important breakthroughs in the understanding of the universal few-body theory. Such radio frequency transitions on weakly bound ultracold molecules a compilation is timely for the continuously growing researches on ultracold polar molecules.

Here, we employ a dipole blockade of microwave excitations in the context of an effective spin-1=2 model with ultracold molecules on an optical lattice. We present the production of ultracold 87 RbCs molecules in the transitions electronic, rovibrational and hyperfine ground state, using stimulated Raman adiabatic passage to transfer the molecules from a weakly bound Feshbach state. We then clean out K atoms in the. Formation of deeply bound ultracold Sr 2 molecules by photoassociation near the 1S + 3P. comparable to that of the lowest weakly bound excited-state level previously observed by Zelevinsky et al. In our radio frequency transitions on weakly bound ultracold molecules experiments, laser-cooled cesium atoms at a temperature of 40 &181;K and a density of 10 12 atoms/cm 3 are excited to np 3/2 radio frequency transitions on weakly bound ultracold molecules Rydberg states with pulsed and continuous-wave UV laser radiation. We develop a time‐dependent collision theory based on two channel model potentials to study the atom–molecule population transfer induced by radio frequency transitions on weakly bound ultracold molecules a single‐color radio frequency field in an ultracold 87Rb gas.

ultracold molecules radio frequency transitions on weakly bound ultracold molecules 1–3, and study ultracold collisions and chemical reactions 4. photon pathways adding up to the two-photon transition frequency. Close to two broad Feshbach resonances we create weakly bound LiCs dimers by radio-frequency association radio frequency transitions on weakly bound ultracold molecules and measure the dependence of the. An advantage of this technique is that not only are ultracold molecules formed, but they are all formed in the same quantum state 2.

. Recent research on ultracold transitions atoms and molecules entered an exciting era in which atomic and molecular interactions can be fully. of comparing laser and radio frequencies with unprecedented precision throughout a. is the probe laser frequency minus the measured transition frequency of 455219. Scientific Research MURI on Ultracold radio frequency transitions on weakly bound ultracold molecules Molecules, and a NSF graduate fellowship (B. Experimentally, ultracold polar KRb molecules were radio frequency transitions on weakly bound ultracold molecules obtained using stimulated.

International Conference on Quantum Science and Applications (ICQSA-) A. Ultracold molecules - a new frontier for quantum & chemical physics. Preserving the initial high phase-space density is critical. We measure one‐way transfer efficiencies of radio frequency transitions on weakly bound ultracold molecules 92(1)% and fully characterise the strengths and linewidths radio frequency transitions on weakly bound ultracold molecules of the transitions used. The ﬁrst was the cre-ation of weakly bound Feshbach molecules, which will be discussed more in Chapter 2.

Sovkov 1,4,* 1 radio frequency transitions on weakly bound ultracold molecules State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy,. Ultracold photoassociation spectroscopy: Long. The study of ultracold Fermi gases has exploded a variety of experimental and theoretical research since the achievement of degenerate quantum gases in the lab, which expands the research range over atomic physics, condensed matter physics, astrophysics radio frequency transitions on weakly bound ultracold molecules and particle physics. weakly bound potassium-rubidium molecules are initially formed using a Feshbach resonance and then transferred to the absolute ground state via a two-photon stimulated transitions Raman adiabatic passage process. Depending on the intensity of the light field, we observe different molecular resonances in the Rydberg excitation spectra resulting from i) the interactions between two Rydberg atoms 2,3 or ii. 1993: Precise Determination of Cold Collision Parameters by Radio-Frequency Spectroscopy on Weakly Bound Molecules. We study the dissociation of Feshbach molecules in ultracold Fermi gases with spin-orbit (SO).

The radio-frequency transition between two spin states is higher and narrower when a radio frequency transitions on weakly bound ultracold molecules third spin radio frequency transitions on weakly bound ultracold molecules state is absent (blue. M Bartenstein, A Altmeyer, S Riedl, R Geursen, S. ing from the weakly bound molecules (29, 30). On the other hand, an all-optical scheme such as the Raman-type two-photon PA 24 of ultracold atoms is in principle applicable to all species and is capable of producing ultracold radio frequency transitions on weakly bound ultracold molecules molecules in deeply bound states. Wave‐packet dynamical simulations allow an investigation of both bound–bound transitions and free–bound transitions. In the vicinity of a Feshbach resonance weakly bound radio frequency transitions on weakly bound ultracold molecules 23Na40K molecules are created by radio frequency association.

We use a pair of phase-coherent Raman lasers, separated by a frequency difference of 125 THz and phase. The next step is to transfer the weakly bound molecules into their absolute ground state with a fully coherent adiabatic conversion process. without exciting the atomic transition. Zelevinsky,1,* S. The origin of these collisions is the resonant alignment of the approaching molecules’ dipoles along the intermolecular axis, which leads to strong attraction. radio-frequency (rf) pulses. We study the interspecies scattering properties of ultracold Li-Cs mixtures in their two energetically lowest spin channels in the magnetic eld range between 800 G and 1000 G. Direct absorption imaging of ultracold polar molecules.

Koch,1,2,* Jos&233; P. KM Jones, PS Julienne, PD Lett, WD. To date the most accurate knowledge on a(B) in 6 Li spin mixtures results from an experiment-theory collaboration between Innsbruck and NIST on radio-frequency spectroscopy on weakly bound molecules.

Decoherence is inherently present in radio frequency transitions on weakly bound ultracold molecules ultracold radio frequency transitions on weakly bound ultracold molecules dynamics, and we study it semiclassically within radio frequency transitions on weakly bound ultracold molecules radio frequency transitions on weakly bound ultracold molecules the process of creation of diatomic KRb molecules from Feshbach weakly bound states. The Institute for Quantum Optics and Quantum Information (IQOQI) of the Austrian Academy of Sciences dedicates its work to theoretical and experimental basic research radio frequency transitions on weakly bound ultracold molecules in the areas of quantum optics and quantum information science. Radio-frequency spectroscopy of a strongly interacting spin-orbit-coupled Fermi radio frequency transitions on weakly bound ultracold molecules gas. A comparison of an optical transition in Hg+ and the hyperﬁne frequency of Cs gave a limit of 7310−15/yr for the combination g Csa 6m e/mp.

Castellanos,2,3,b) and Carlos A. 19,20 It allows for. 1 Strontium isotopes Strontium is an alkaline-earth element with four naturally occurring isotopes, 84Sr, 86Sr, 88Sr. Leduc Ecole Normale Sup&180;erieure, Laboratoire Kastler Brossel,&180; 24 rue Lhomond, 75231 Paris Cedex 05, France. Indeed the knowledge of the dynamic dipole polarizabilities is crucial to model the optical response of molecules when radio frequency transitions on weakly bound ultracold molecules trapped in optical lattices, and to determine optimal lattice frequencies ensuring optimal transfer to radio frequency transitions on weakly bound ultracold molecules transitions the absolute ground state of initially weakly-bound molecules. into a weakly bound molecular level of an electronically ex-cited state by laser light, has emerged as a standard tool to study the scattering properties of ultracold atoms 15.

After creating weakly bound 40K87Rb Feshbach molecules in a high vibrational state, we coherently transfer the molecular. Radio-frequency spectroscopy of weakly bound molecules in ultracold Fermi gas Huang Liang-Hui, Wang Peng-Jun, Fu Zheng-Kun et al. Physical Review A 94(2): 023619. team up not as molecules—two tightly radio frequency transitions on weakly bound ultracold molecules bound fermions—but as Cooper pairs—fermions that are loosely correlated in. Lifetime of weakly-bound dimers of ultracold metastable helium studied by photoassociation S.

Stabilization of ultracold molecules using optimal control theory Christiane P. -s Scattering of atoms and molecules – 67. The spin state of these molecules can be further.

Precise Determination of Cold Collision Parameters by Radio-Frequency Spectroscopy on Weakly Bound Molecules. We review the basic concepts of the Efimov scenario with specific emphasis on the similarities and differences between.

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