Atom–molecule coherence in a Bose–Einstein condensate

@article{Donley2002AtommoleculeCI,
  title={Atom–molecule coherence in a Bose–Einstein condensate},
  author={Elizabeth A. Donley and Neil R. Claussen and Sarah T. Thompson and Carl E. Wieman},
  journal={Nature},
  year={2002},
  volume={417},
  pages={529-533}
}
Recent advances in the precise control of ultracold atomic systems have led to the realisation of Bose–Einstein condensates (BECs) and degenerate Fermi gases. An important challenge is to extend this level of control to more complicated molecular systems. One route for producing ultracold molecules is to form them from the atoms in a BEC. For example, a two-photon stimulated Raman transition in a 87Rb BEC has been used to produce 87Rb2 molecules in a single rotational-vibrational state, and… 

Creation of ultracold molecules from a Fermi gas of atoms

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.

Coherently forming a single molecule in an optical trap

This work reports an alternative route to coherently bind two atoms into a weakly bound molecule at megahertz levels by coupling atomic spins to their two-body relative motion in a strongly focused laser with inherent polarization gradients, opening the door to full control of all degrees of freedom in atom-molecule systems.

Emergence of a molecular Bose–Einstein condensate from a Fermi gas

This work reports the direct observation of a molecular Bose–Einstein condensate created solely by adjusting the interaction strength in an ultracold Fermi gas of atoms, which represents one extreme of the predicted BCS–BEC continuum.

Molecule formation in ultracold atomic gases

This review describes recent experimental and theoretical advances in forming molecules in ultracold gases of trapped alkali metal atoms, both by magnetic tuning through Feshbach resonances and by

Optical Feshbach Resonances in a Bose-Einstein Condensate

This thesis reports on the first observation of optical tuning of interactions in an ultracold atomic gas. To control the elastic interactions, we use optically induced scattering resonances. They

Adiabatic association of ultracold molecules via magnetic-field tunable interactions

We consider in detail the situation of applying a time-dependent external magnetic field to a 87Rb atomic Bose–Einstein condensate held in a harmonic trap, in order to adiabatically sweep the

A molecular Bose-Einstein condensate emerges from a Fermi sea

The realization of fermionic superfluidity in a dilute gas of atoms, analogous to superconductivity in metals, is a long-standing goal of ultracold gas research. Beyond being a new example of this

A trapped single ion inside a Bose–Einstein condensate

This work investigates whether atomic quantum gases and single trapped ions can be advantageously combined into one hybrid system, by exploring the immersion of a single trapped ion into a Bose–Einstein condensate of neutral atoms.

Ultracold strontium and rubidium: Mixtures, quantum gases and molecules

This thesis describes important steps towards the creation of ultracold RbSr ground-state molecules. These open-shell polar molecules will be employed as a platform for quantum simulation of strongly
...

References

SHOWING 1-10 OF 31 REFERENCES

Stimulated Raman adiabatic passage from an atomic to a molecular Bose-Einstein condensate

Summary form only given. Coherent conversion of an atomic to a molecular Bose-Einstein condensate (BEC) is a first step towards 'superchemistry', which is the atom optics analog of frequency

Molecules in a bose-einstein condensate

This method allows molecular binding energies to be determined with unprecedented accuracy and is of interest as a mechanism for the generation of a molecular Bose-Einstein condensate.

Rarified Liquid Properties of Hybrid Atomic-Molecular Bose-Einstein Condensates

In the atomic Bose-Einstein condensate, the interactions that bring a binary atom system to an intermediate state molecule in the Feshbach resonance create a second condensate component of molecules.

Quantum effects on the dynamics of a two-mode atom-molecule Bose-Einstein condensate

We study the system of coupled atomic and molecular condensates within the two-mode model and beyond mean-field theory. Large-amplitude atom-molecule coherent oscillations are shown to be damped by

Dynamics of collapsing and exploding Bose–Einstein condensates

The dynamics of how a Bose–Einstein condensate collapses and subsequently explodes when the balance of forces governing its size and shape is suddenly altered is explored.

Conditions for Bose-Einstein condensation in magnetically trapped atomic cesium.

In all calculated elastic and inelastic two-body rates, a pronounced resonance structure is found, which can be understood in terms of the interplay between the singlet-triplet interaction and the hyperfine, Zeeman, and magnetic dipole interactions.

Stable 85Rb bose-einstein condensates with widely tunable interactions

Bose-Einstein condensation has been achieved in a magnetically trapped sample of 85Rb atoms. Long-lived condensates of up to 10(4) atoms have been produced by using a magnetic-field-induced Feshbach

Controlled collapse of a Bose-Einstein condensate.

The point of instability of a Bose-Einstein condensate (BEC) due to attractive interactions was studied and was determined to be N(absolute value of a) / a(ho) = 0.012+/-0.054, slightly lower than the predicted value of 0.574.

Coherent Molecular Solitons in Bose-Einstein Condensates

We analyze the coherent formation of molecular Bose-Einstein condensate (BEC) from an atomic BEG, using a parametric field theory approach. We point out the transition between a quantum soliton