Condensation of pairs of fermionic atoms near a Feshbach resonance.

By M. Zwierlein, C. Stan, C. Schunck, S. Raupach, A. Kerman, W. Ketterle. Physical Review Letters, 2004

803 citations recorded by the source corpus.

We have observed Bose-Einstein condensation of pairs of fermionic atoms in an ultracold 6Li gas at magnetic fields above a Feshbach resonance, where no stable 6Li2 molecules would exist in vacuum. We accurately determined the position of the resonance to be 822+/-3 G. Molecular Bose-Einstein condensates were detected after a fast magnetic field ramp, which transferred pairs of atoms at close distances into bound molecules. Condensate fractions as high as 80% were obtained. The large condensate fractions are interpreted in terms of preexisting molecules which are quasistable even above the two-body Feshbach resonance due to the presence of the degenerate Fermi gas.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/2e2f0e5e7b8c5df1c53edd302be7c2e222625ba0

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

General coordinate invariance and conformal invariance in nonrelativistic physics: Unitary Fermi gas (2005, methodology): “W e nd the m ost generale ective Lagrangian consistent with both generalcoordinate and conform alinvariance to leading and next-to-leading ordersin the m om entum expansion.”
Making, probing and understanding ultracold Fermi gases (2008, methodology): “This method was introduced by the JILA group [69], and later adapted to (6)Li by our group [70].”
Quantum turbulence in trapped atomic Bose-Einstein condensates (2015, background): “The former case has been achieved experimentally in ultracold lithium-6 [230, 231] whereas the latter in potassium gases [232].”
Quantum simulation of the Hubbard model with ultracold fermions in optical lattices (2018, neutral): “The first quantum simulation studies with ultracold fermionic atoms focused on the study of superfluidity in trapped two-component Fermi gases with strong interactions [18], for instance the BEC-BCS crossover [19,20,21,22,23,24,25] and various thermodynamic properties [26,27,28,29,30].”
The BCS–BEC crossover: From ultra-cold Fermi gases to nuclear systems (2018, background): “(i) The initial production of long-lived composite bosons [236, 237, 238, 239]; (ii) The condensation of composite bosons [240, 241, 242]; (iii) The evidence of a condensate extending also to the BCS side of the crossover [243, 244] with the “projection” technique introduced in Ref.”
Gravity duals for non-relativistic CFTs (2008, neutral): “April, 2008”
Theory of ultracold atomic Fermi gases (2007, background): “The experimental information on the condensation of pairs (Regal, Greiner and Jin, 2004b; Zwierlein et al., 2004) and on the structure of vortices (Zwierlein et al., 2005b) along the crossover is so far based on the measurement of the density profiles following the fast ramping of the scattering…”
Feshbach resonances in ultracold gases (2008, methodology): “The fast-ramp method was applied by (Zwierlein et al., 2004) to observe fermion condensates in 6Li.”