Trapped ion quantum computation with transverse phonon modes

Details Trapped ion quantum computation with transverse phonon modes Trapped ion quantum computation with transverse phonon modes

2006-01-23

arxiv.org/abs/quant-ph/0601159v1

Phys. Rev. Lett. 97,050505 (2006)

Physics

Quantum Physics

5 pages

Scientific paper

10.1103/PhysRevLett.97.050505

We propose a scheme to implement quantum gates on any pair of trapped ions immersed in a large linear crystal, using interaction mediated by the transverse phonon modes. Compared with the conventional approaches based on the longitudinal phonon modes, this scheme is much less sensitive to ion heating and thermal motion outside of the Lamb-Dicke limit thanks to the stronger confinement in the transverse direction. The cost for such a gain is only a moderate increase of the laser power to achieve the same gate speed. We also show how to realize arbitrary-speed quantum gates with transverse phonon modes based on simple shaping of the laser pulses.

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