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Related papers: A quantum degenerate Bose-Fermi mixture of $^{41}$…

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We report on the generation of a quantum degenerate Fermi-Fermi mixture of two different atomic species. The quantum degenerate mixture is realized employing sympathetic cooling of fermionic Li-6 and K-40 gases by an evaporatively cooled…

Other Condensed Matter · Physics 2009-11-13 M. Taglieber , A. -C. Voigt , T. Aoki , T. W. Hänsch , K. Dieckmann

We have produced a quantum degenerate mixture of fermionic alkali 6Li and bosonic spin-singlet 174Yb gases. This was achieved using sympathetic cooling of lithium atoms by evaporatively cooled ytterbium atoms in a far-off-resonant optical…

We report the observation of simultaneous quantum degeneracy in a dilute gaseous Bose-Fermi mixture of metastable atoms. Sympathetic cooling of helium-3 (fermion) by helium-4 (boson), both in the lowest triplet state, allows us to produce…

Statistical Mechanics · Physics 2007-05-23 J. M. McNamara , T. Jeltes , A. S. Tychkov , W. Hogervorst , W. Vassen

We report on the achievement of simultaneous quantum degeneracy in a mixed gas of fermionic ^40 K and bosonic ^87 Rb. Potassium is cooled to 0.3 times the Fermi temperature by means of an efficient thermalization with evaporatively cooled…

Soft Condensed Matter · Physics 2009-11-07 G. Roati , F. Riboli , G. Modugno , M. Inguscio

We report the realization of a degenerate mixture of $^{166}$Er and $^{7}$Li atoms in their energetically lowest spin states. The two species are sequentially laser-cooled and loaded into an optical dipole trap, then transported to a glass…

We propose the use of a combined optical dipole trap to achieve Fermi degeneracy by sympathetic cooling with a different bosonic species. Two far-detuned pairs of laser beams focused on the atomic clouds are used to confine the two atomic…

Statistical Mechanics · Physics 2009-11-07 Roberto Onofrio , Carlo Presilla

We report on the attainment of a degenerate Fermi gas of $\rm^{6}Li$ in contact with a Bose-Einstein condensate (BEC) of $^{84}$Sr. A degeneracy of $T/T_F=0.33(3)$ is observed with $1.6\times10^5$ $^{6}$Li atoms in the two lowest energy…

Quantum Gases · Physics 2020-09-16 Zhu-Xiong Ye , Li-Yang Xie , Zhen Guo , Xiao-Bin Ma , Gao-Ren Wang , Li You , Meng Khoon Tey

We have produced a quantum degenerate Li-6 Fermi gas with up to 7 x 10^7 atoms, an improvement by a factor of fifty over all previous experiments with degenerate Fermi gases. This was achieved by sympathetic cooling with bosonic Na-23 in…

Soft Condensed Matter · Physics 2009-11-10 Z. Hadzibabic , S. Gupta , C. A. Stan , C. H. Schunck , M. W. Zwierlein , K. Dieckmann , W. Ketterle

We report on the achievement of quantum degeneracy in both components of a Bose-Fermi mixture of metastable helium atoms, $^4$He* and $^3$He*. Degeneracy is achieved via Doppler cooling and forced evaporation for $^4$He*, and…

We have produced a macroscopic quantum system in which a Li-6 Fermi sea coexists with a large and stable Na-23 Bose-Einstein condensate. This was accomplished using inter-species sympathetic cooling of fermionic Li-6 in a thermal bath of…

Soft Condensed Matter · Physics 2016-08-16 Z. Hadzibabic , C. A. Stan , K. Dieckmann , S. Gupta , M. W. Zwierlein , A. Görlitz , W. Ketterle

We use a gray molasses operating on the D$_1$ atomic transition to produce degenerate quantum gases of $^{6}$Li with a large number of atoms. This sub-Doppler cooling phase allows us to lower the initial temperature of 10$^9$ atoms from 500…

Quantum Gases · Physics 2015-06-22 A. Burchianti , G. Valtolina , J. A. Seman , E. Pace , M. De Pas , M. Inguscio , M. Zaccanti , G. Roati

We report on the realization of a novel degenerate mixture of ultracold fermionic lithium and chromium atoms. Based on an all-optical approach, with an overall duty-cycle of about 13 seconds, we produce large and degenerate samples of more…

Quantum Gases · Physics 2022-11-30 A. Ciamei , S. Finelli , A. Cosco , M. Inguscio , A. Trenkwalder , M. Zaccanti

We achieve a highly degenerate and strongly interacting Fermi gas in a mixture of the two lowest hyperfine states of $^6$Li by direct evaporative cooling in a high power crossed optical dipole trap. The trap is loaded from a large atom…

Quantum Gases · Physics 2015-05-20 Shujing Deng , Pengpeng Diao , Qianli Yu , Haibin Wu

After a brief historical introduction to Bose-Einstein condensation and Fermi degeneracy, we discuss theoretical results we have recentely obtained for trapped degenerate quantum gases by means of a thermal field theory approach. In…

Statistical Mechanics · Physics 2007-05-23 Luca Salasnich

We report on the formation of a stable quantum degenerate mixture of fermionic $^6$Li and bosonic $^{133}$Cs in an optical trap by sympathetic cooling near an interspecies Feshbach resonance. New regimes of the quantum degenerate mixtures…

Quantum Gases · Physics 2017-12-12 B. J. DeSalvo , Krutik Patel , Jacob Johansen , Cheng Chin

We report on the observation of sympathetic cooling of a cloud of fermionic 6-Li atoms which are thermally coupled to evaporatively cooled bosonic 87-Rb. Using this technique we obtain a mixture of quantum-degenerate gases, where the Rb…

Statistical Mechanics · Physics 2015-06-25 C. Silber , S. Guenther , C. Marzok , B. Deh , Ph. W. Courteille , C. Zimmermann

We produce a quantum degenerate mixture composed by two Bose-Einstein condensates of different atomic species, 41 K and 87 Rb. We study the dynamics of the superfluid system in an elongated magnetic trap, where off-axis collisions between…

Condensed Matter · Physics 2009-11-07 G. Modugno , M. Modugno , F. Riboli , G. Roati , M. Inguscio

We realize simultaneous quantum degeneracy in mixtures consisting of the alkali and alkalineearth-like atoms Li and Yb. This is accomplished within an optical trap by sympathetic cooling of the fermionic isotope 6Li with evaporatively…

Atomic Physics · Physics 2015-05-27 Hideaki Hara , Yosuke Takasu , Yoshifumi Yamaoka , John M. Doyle , Yoshiro Takahashi

We produce Bose-Einstein condensates of 6Li2 molecules in a low power (22 W) crossed optical dipole trap. Fermionic 6Li atoms are collected in a magneto-optical trap from a Zeeman slowed atomic beam, then loaded into the optical dipole trap…

Other Condensed Matter · Physics 2009-11-13 J. Fuchs , G. J. Duffy , G. Veeravalli , P. Dyke , M. Bartenstein , C. J. Vale , P. Hannaford , W. J. Rowlands

We discuss cooling efficiency for different-species Fermi-Bose mixtures in magnetic traps. A better heat capacity matching between the two atomic species is achieved by a proper choice of the Bose cooler and the magnetically trappable…

Superconductivity · Physics 2009-11-10 Michael Brown-Hayes , Roberto Onofrio
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