Preparation and Determination of Spin-Polarized States in Multi-Zeeman-sublevel Atoms

Details Preparation and Determination of Spin-Polarized States in Multi-Zeeman-sublevel Atoms Preparation and Determination of Spin-Polarized States in Multi-Zeeman-sublevel Atoms

2006-11-16

arxiv.org/abs/quant-ph/0611178v1

Physics

Quantum Physics

17pages, 4figures, Submit to Physical Review Letters

Scientific paper

10.1103/PhysRevA.75.051801

We demonstrate a simple technique to prepare and determine the desired internal quantum states in multi-Zeeman-sublevel atoms. By choosing appropriate coupling and pumping laser beams, atoms can be easily prepared in a desired Zeeman sublevel with high purity or in any chosen ground-state population distributions. The population distributions or state purities of such prepared atomic states can be determined by using a weak, circularly-polarized probe beam due to differences in transition strengths among different Zeeman sublevels. Preparing well-defined internal quantum states in multi-Zeeman-sublevel atoms (or spin-polarized quantum-state engineering) will be very important in demonstrating many interesting effects in quantum information processing with multi-level atomic systems.

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