Physics – Quantum Physics
Scientific paper
2008-01-10
Physics
Quantum Physics
9 pages, 7 figures. Discussion of performance outside Lamb-Dicke regime added. Some refs added
Scientific paper
10.1103/PhysRevA.77.063837
A simple technique for robust generation of vibrational Fock states in a chain of trapped ions is proposed. The method is fast and easy to implement, since only a single chirped laser pulse, simultaneously addressing all of the ions, is required. Furthermore, because the approach uses collective adiabatic passage, significant fluctuations in the intensity or frequency of the laser pulse can be tolerated, and the technique performs well even on the border of the Lamb-Dicke regime. We also demonstrate how this technique may be extended in order to create non-classical superposition states of the ions' collective motion and Greenberger-Horne-Zeilinger states of their internal states. Because only a single laser pulse is required, heating effects arising under realistic experimental conditions are negligibly small.
Ivanov Peter A.
Linington I. E.
Plenio Martin . B.
Vitanov Nikolay V.
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