Coherent internal state transfer by three-photon STIRAP-like scheme for many-atom samples

Marius Romuald Kamsap (1, 2) , Thierry Blanchard Ekogo (1) , Jofre Pedregosa-Gutierrez (2) , Gaetan Hagel (2) , Marie Houssin (2) , Olivier Morizot (2) , Martina Knoop (2) , Caroline Champenois (2)

1 Département de Physique
2 PIIM - Physique des interactions ioniques et moléculaires

A STIRAP-like scheme is proposed to exploit a three-photon resonance taking place in alkaline-earth-metal ions. This scheme is designed for state transfer between the two fine structure components of the metastable D-state which are two excited states that can serve as optical or THz qu-bit. The advantage of a coherent three-photon process compared to two-photon STIRAP lies in the possibility of exact cancellation of the first order Doppler shift which opens the way for an application to a sample composed of many ions. The transfer efficiency and its dependence with experimental parameters are analyzed by numerical simulations. This efficiency is shown to reach a fidelity as high as $(1-8.10^{-5})$ with realistic parameters. The scheme is also extended to the synthesis of a linear combination of three stable or metastable states.

Mots clés: coherent population transfer; trapped ion; qu-bit manipulation; STIRAP; three-photon process

Domaines: Physique Quantique [quant-ph]

Marius Romuald Kamsap, Thierry Blanchard Ekogo, Jofre Pedregosa-Gutierrez, Gaetan Hagel, Marie Houssin, et al.. Coherent internal state transfer by three-photon STIRAP-like scheme for many-atom samples. Journal of Physics B: Atomic, Molecular and Optical Physics, 2013, 46 (14), pp.145502. ⟨10.1088/0953-4075/46/14/145502⟩. ⟨hal-00821041⟩