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The next big thing

Josette Chen

Published Jan 1, 2000• 0 citations
OpenAlex

Abstract

In theory, a unique rubidium molecule (Rb2) can be made in a Bose-Einstein condensate. If this molecule is ever produced, it will be the largest (500-50, 000 Å) and most polar diatomic molecule yet created.

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Rudolf Grimm

On this date in 1961, Rudolf Grimm, who led one of the projects that created the first Bose-Einstein condensate of molecules, was born in Mannheim, West Germany. In 2002 the team he was working with at the University of Innsbruck, Austria, created a Bose-Einstein condensate from cesium atoms for the first time. The next year they achieved the same thing with molecules and the year after that they created a Fermionic condensate, which is a superfluidic state of fermions, where a Bose-Einstein condensate is a superfluidic state of bosons.

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THE FIRST STEP TOWARDS REALIZATION OF MOLECULAR CONDENSATE

Han Dian

A group at the University of Texas at Austin has recently created Rb\-2 moleculaes from a Rubidium\|87 Bose\|Einstein condensate with two\|photon stimulated Raman transitions.The molecules are in a single ro\|vibrational level and have a temperature on the order of 100nK.These might be the coldest molecules in the universe,as says Paul Julienne,a senior atomic physicist at NIST.This method provides an alternative route for formation of ultra\|cold molecules which are still not achievable with the traditional laser cooling and trapping techniques,and may lead to the first realization of molecular Bose\|Einstein condensate.

•Jan 1, 2000•0 citations

Comment on ``Ramsey Fringes in a Bose-Einstein Condensate between Atoms and Molecules''

Eric Braaten, H.‐W. Hammer, Masaoki Kusunoki

In Phys. Rev. Lett. 89, 180401 (2002) [cond-mat/0204504], Kokkelmans and Holland interpret the results of a recent experiment at JILA that demonstrated atom-molecule coherence in a Bose-Einstein condensate. Using a mean-field approximation to a resonance field theory involving an atom condensate and a molecular condensate, they find that the molecular condensate is tiny compared to the atom condensate. We show that if the probability for the molecular field to create a diatomic molecule is correctly included, the numbers of atoms in the atom condensate and in the condensate of diatomic molecules are comparable.

arXiv:cond-mat/0301489•Jan 24, 2003•1 citation

Bose-Einstein Condensation of Rubidium

Daniel Frese

•Jan 1, 2005•0 citations
On this date in 1961, Rudolf Grimm, who led one of the projects that created the first Bose-Einstein condensate of molecules, was born in Mannheim, West Germany. In 2002 the team he was working with at the University of Innsbruck, Austria, created a Bose-Einstein condensate from cesium atoms for the first time. The next year they achieved the same thing with molecules and the year after that they created a Fermionic condensate, which is a superfluidic state of fermions, where a Bose-Einstein condensate is a superfluidic state of bosons.
A group at the University of Texas at Austin has recently created Rb\-2 moleculaes from a Rubidium\|87 Bose\|Einstein condensate with two\|photon stimulated Raman transitions.The molecules are in a single ro\|vibrational level and have a temperature on the order of 100nK.These might be the coldest molecules in the universe,as says Paul Julienne,a senior atomic physicist at NIST.This method provides an alternative route for formation of ultra\|cold molecules which are still not achievable with the traditional laser cooling and trapping techniques,and may lead to the first realization of molecular Bose\|Einstein condensate.
In Phys. Rev. Lett. 89, 180401 (2002) [cond-mat/0204504], Kokkelmans and Holland interpret the results of a recent experiment at JILA that demonstrated atom-molecule coherence in a Bose-Einstein condensate. Using a mean-field approximation to a resonance field theory involving an atom condensate and a molecular condensate, they find that the molecular condensate is tiny compared to the atom condensate. We show that if the probability for the molecular field to create a diatomic molecule is correctly included, the numbers of atoms in the atom condensate and in the condensate of diatomic molecules are comparable.