Determination of atomic scattering lengths from measurements of molecular binding energies near Feshbach resonances
A. D. Lange,K. Pilch,A. Prantner,Francesca Ferlaino,B. Engeser,Hanns-Christoph Nägerl,Rudolf Grimm,Cheng Chin +7 more
TLDR
In this article, an analytic model was proposed to calculate the atomic scattering length near a Feshbach resonance from data on the molecular binding energy using magnetic-field modulation spectroscopy in a range where one broad and two narrow resonances overlap.Abstract:
We present an analytic model to calculate the atomic scattering length near a Feshbach resonance from data on the molecular binding energy. Our approach considers finite-range square-well potentials and can be applied near broad, narrow, or even overlapping Feshbach resonances. We test our model on ${\mathrm{Cs}}_{2}$ Feshbach molecules. We measure the binding energy using magnetic-field modulation spectroscopy in a range where one broad and two narrow Feshbach resonances overlap. From the data we accurately determine the Cs atomic scattering length and the positions and widths of two particular resonances.read more
Citations
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Feshbach resonances in ultracold gases
TL;DR: Feshbach resonances are the essential tool to control the interaction between atoms in ultracold quantum gases and have found numerous experimental applications, opening up the way to important breakthroughs as mentioned in this paper.
Feshbach Resonances in Ultracold Gases
TL;DR: Feshbach resonances are the essential tool to control the interaction between atoms in ultracold quantum gases and have found numerous experimental applications, opening up the way to important breakthroughs as mentioned in this paper.
Journal ArticleDOI
Realization of an Excited, Strongly Correlated Quantum Gas Phase
Elmar Haller,Mattias Gustavsson,Manfred J. Mark,Johann G. Danzl,Russell Hart,Guido Pupillo,Hanns-Christoph Nägerl +6 more
TL;DR: A technique in which confinement of the atoms to low dimensions, using a confinement-induced resonance, can stabilize excited states with tunable interactions, opening up the experimental study of metastable, excited, many-body phases with strong correlations and their dynamical properties.
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Non-Gaussianity as a Signature of a Quantum Theory of Gravity
Richard Howl,Richard Howl,Richard Howl,Vlatko Vedral,Vlatko Vedral,Devang Naik,Marios Christodoulou,Marios Christodoulou,Carlo Rovelli,Carlo Rovelli,Carlo Rovelli,Aditya Iyer +11 more
TL;DR: In this article, it was shown that only a quantum, not classical, theory of gravity can create non-Gaussianity, a QIS resource that is necessary for universal quantum computation, in the quantum field state of matter.
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Production of a dual-species Bose-Einstein condensate of Rb and Cs atoms
A. D. Lercher,Tetsu Takekoshi,Markus Debatin,B. Schuster,Raffael Rameshan,Francesca Ferlaino,Rudolf Grimm,Rudolf Grimm,Hanns-Christoph Nägerl +8 more
TL;DR: In this article, the authors report the simultaneous production of Bose-Einstein condensates (BECs) of 87Rb and 133Cs atoms in separate optical traps, where the two samples are mixed during laser cooling and loading but are separated by 400 μm for the final stage of evaporative cooling.
References
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Creation of ultracold molecules from a Fermi gas of atoms
TL;DR: The creation and quantitative characterization of ultracold 40K2 molecules is reported, which can be converted back to atoms by reversing the scan, and the small binding energy of the molecules is controlled by detuning the magnetic field away from the Feshbach resonance, and can be varied over a wide range.