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Phys. Rev. A 70, 052327 (2004) [9 pages]

Geometric quantum gate for trapped ions based on optical dipole forces induced by Gaussian laser beams

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Peter Staanum*, Michael Drewsen, and Klaus Mølmer
QUANTOP—Danish National Research Foundation Center for Quantum Optics, Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark

Received 25 June 2004; published 29 November 2004

We propose an implementation of quantum logic gates via internal state dependent displacements of ions in a linear Paul trap caused by optical dipole forces. Based on a general quantum analysis of the system dynamics we consider specific implementations with alkaline-earth-metal ions. For experimentally realistic parameters gate infidelities as low as 10−4 can be obtained.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.70.052327
DOI:
10.1103/PhysRevA.70.052327
PACS:
03.67.Lx, 03.65.Vf, 32.80.Lg, 32.80.Qk

*Present address: Physikalisches Institut, Universität Freiburg, Hermann-Herder Strasse 3, 79104 Freiburg, Germany.

 
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