Ion-trap quantum computing in the presence of cooling

Details Ion-trap quantum computing in the presence of cooling Ion-trap quantum computing in the presence of cooling

2003-04-25

arxiv.org/abs/quant-ph/0304168v2

Phys. Rev. A 69, 012303 (2004).

Physics

Quantum Physics

12 pages, 9 figures, submitted to Phys. Rev. A, revised version, new title

Scientific paper

10.1103/PhysRevA.69.012303

This paper discusses ways to implement two-qubit gate operations for quantum computing with cold trapped ions within one step. The proposed scheme is widely robust against parameter fluctuations and its simplicity might help to increase the number of qubits in present experiments. Basic idea is to use the quantum Zeno effect originating from continuous measurements on a common vibrational mode to realise gate operations with very high fidelities. The gate success rate can, in principle, be arbitrary high but operation times comparable to other schemes can only be obtained by accepting success rates below 80%.

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