Coherent control of trapped ions using off-resonant lasers

Details Coherent control of trapped ions using off-resonant lasers Coherent control of trapped ions using off-resonant lasers

2004-11-15

arxiv.org/abs/quant-ph/0411103v2

Phys. Rev. A 71, 062309 (2005)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.71.062309

In this paper we develop a unified framework to study the coherent control of trapped ions subject to state-dependent forces. Taking different limits in our theory, we can reproduce two different designs of a two-qubit quantum gate --the pushing gate [1] and the fast gates based on laser pulses from Ref. [2]--, and propose a new design based on continuous laser beams. We demonstrate how to simulate Ising Hamiltonians in a many ions setup, and how to create highly entangled states and induce squeezing. Finally, in a detailed analysis we identify the physical limits of this technique and study the dependence of errors on the temperature. [1] J.I. Cirac, P. Zoller, Nature, 404, 579, 2000. [2] J.J. Garcia-Ripoll, P. Zoller, J.I. Cirac, PRL 67, 062318, 2003

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