Transport dynamics of single ions in segmented microstructured Paul trap arrays

Details Transport dynamics of single ions in segmented microstructured Paul trap arrays Transport dynamics of single ions in segmented microstructured Paul trap arrays

2006-06-28

arxiv.org/abs/quant-ph/0606237v1

Physics

Quantum Physics

20 pages, 5 figures

Scientific paper

10.1002/prop.200610326

It was recently proposed to use small groups of trapped ions as qubit carriers in miniaturized electrode arrays that comprise a large number of individual trapping zones, between which ions could be moved. This approach might be scalable for quantum information processing with a large numbers of qubits. Processing of quantum information is achieved by transporting ions to and from separate memory and qubit manipulation zones in between quantum logic operations. The transport of ion groups in this scheme plays a major role and requires precise experimental control and fast transport. In this paper we introduce a theoretical framework to study ion transport in external potentials that might be created by typical miniaturized Paul trap electrode arrays. In particular we discuss the relationship between classical and quantum descriptions of the transport and study the energy transfer to the oscillatory motion during near-adiabatic transport. Based on our findings we suggest a numerical method to find electrode potentials as a function of time to optimize the local potential an ion experiences during transport. We demonstrate this method for one specific electrode geometry that should closely represent the situation encountered in realistic trap arrays.

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