Coherently manipulating cold ions in separated traps by their vibrational couplings II: non-adiabatic case

Details Coherently manipulating cold ions in separated traps by their vibrational couplings II: non-adiabatic case Coherently manipulating cold ions in separated traps by their vibrational couplings II: non-adiabatic case

2011-07-25

arxiv.org/abs/1107.4964v1

Physics

Quantum Physics

4 pages, 3figures

Scientific paper

In the previous paper [M. Zhang and L. F. Wei, Phys. Rev. A 83, 064301 (2011)] we proposed an approach to implement the universal quantum gates between two ions, confined individually in the separated traps, by adiabatically manipulating the ionic vibrations. Here, we relax the previous adiabatic requirements and show that the desirable couplings between the ions in different traps can be still implemented by simply using a non-adiabatic laser pulse. The potential wells of the ions are unchanged, but the ionic vibrations are driven for resonance or large-detuning by the applied laser beams. Consequently, the desirable quantum gates between the ions could be implemented conveniently by using only a few of laser pulses. The proposal could also be generalized to the fast quantum computation with the scalable ion-traps.

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