Hannover 2013 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 5: Quantum information: Atoms and ions I

Q 5.4: Talk

Monday, March 18, 2013, 11:45–12:00, E 214

Driven single-sideband geometric phase gates with trapped ions — •Andreas Lemmer, Alejandro Bermúdez, and Martin B. Plenio — Institut für Theoretische Physik, Universität Ulm, 89069 Ulm, Germany

We will present our recent work on the implementation of a two qubit quantum logic gate for trapped ions which is robust against both thermal and dephasing noise. In particular, it is simpler than previous schemes because it relies on a single red-sideband excitation for quantum logic while the robustness against thermal and dephasing noise is achieved by a strong driving from a microwave source [1]. By choosing the laser and microwave frequencies appropriately the gate can be transformed into a geometric phase gate and thus be made faster and more reliable [2].

A. Bermúdez et al., Phys. Rev. A 85, 040302(R) (2012)
A. Lemmer, A. Bermúdez and M. B. Plenio in preparation