Spinor atom-molecule conversion via laser-induced three-body recombination

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.043601· OSTI ID:21544662

Jing, H ^[1]; Deng, Y ^[1]; Meystre, P ^[2]

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1. Department of Physics, Henan Normal University, Xinxiang 453007 (China)
2. B2 Institute, Department of Physics and College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 (United States)

We study the theory of several aspects of the dynamics of coherent atom-molecule conversion in spin-one Bose-Einstein condensates. Specifically, we discuss how, for a suitable dark-state condition, the interplay of spin-exchange collisions and photo association leads to the stable creation of an atom-molecule pair from three initial spin-zero atoms. This process involves two two-body interactions and can be intuitively viewed as an effective three-body recombination. We investigate the relative roles of photo association and of the initial magnetization in the 'resonant' case, where the dark-state condition is perfectly satisfied. We also consider the 'nonresonant' case, where that condition is satisfied either only approximately - the so-called adiabatic case - or not at all. In the adiabatic case, we derive an effective nonrigid pendulum model that allows one to conveniently discuss the onset of an antiferromagnetic instability in an 'atom-molecule pendulum', as well as large-amplitude pair oscillations and atom-molecule entanglement.

• OSTI ID: 21544662
• Journal Information: Physical Review. A, Vol. 83, Issue 4; Other Information: DOI: 10.1103/PhysRevA.83.043601; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
ATOM-MOLECULE COLLISIONS
ATOMS
BOSE-EINSTEIN CONDENSATION
CONVERSION
LASERS
MAGNETIZATION
MOLECULES
OSCILLATIONS
QUANTUM ENTANGLEMENT
RECOMBINATION
SPIN
SPIN EXCHANGE
THREE-BODY PROBLEM
TWO-BODY PROBLEM
ANGULAR MOMENTUM
ATOM COLLISIONS
COLLISIONS
MAGNETISM
MANY-BODY PROBLEM
MOLECULE COLLISIONS
PARTICLE PROPERTIES