Simultaneous cooling of axial vibrational modes in a linear ion-trap

Details Simultaneous cooling of axial vibrational modes in a linear ion-trap Simultaneous cooling of axial vibrational modes in a linear ion-trap

2005-06-07

arxiv.org/abs/physics/0506061v1

Phys. Rev. A 72, 023421 (2005)

Physics

Atomic Physics

16 pages, 10 figures

Scientific paper

10.1103/PhysRevA.72.023421

In order to use a collection of trapped ions for experiments where a well defined preparation of vibrational states is necessary, all vibrational modes have to be cooled to ensure precise and repeatable manipulation of the ions' quantum states. A method for simultaneous sideband cooling of all axial vibrational modes is proposed. By application of a magnetic field gradient the absorption spectrum of each ion is modified such that sideband resonances of different vibrational modes coincide. The ion string is then irradiated with monochromatic electromagnetic radiation, in the optical or microwave regime, for sideband excitation. This cooling scheme is investigated in detailed numerical studies. Its application for initializing ion strings for quantum information processing is extensively discussed.

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