Mainz 2017 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 31: Poster: Quantum Optics and Photonics I
Q 31.55: Poster
Tuesday, March 7, 2017, 17:00–19:00, P OG1+2
Single trapped ions for Rydberg quantum logic — Patrick Bachor1,2, •Justas Andrijauskas1,2, Jochen Walz1,2 und Ferdinand Schmidt-Kaler1 — 1Institut für Physik, Universität Mainz, Staudinger Weg 7, D-55128 Mainz — 2Helmholtz-Institut Mainz, D-55099 Mainz
The excitation of cold trapped single ions into Rydberg states enables new possibilities in quantum information and non-equilibrium physics. The interplay between Coulomb and Rydberg interactions motivates several proposals for fast multi-qubit gate operations, novel many-body phenomena such as hexagonal plaquette spin-spin interactions, and the driving of fast structural phase transitions in ion crystals.
In our experiment linear crystals made up from 40Ca+ ions in a linear segmented Paul trap are used. We excited the 52F, 53F [1] and the 22F [2] Rydberg states using a single photon vacuum-ultraviolet excitation near 122.042 nm, 122.032 nm and 123.256 nm wavelengths, respectively. To move towards quantum logic, we recently implemented coherent initialization into different 3D5/2 Zeeman states, sideband ground state cooling and local addressing of single ions for the excitation into the Rydberg state.
[1] T. Feldker et al., Phys. Rev. Lett. 115 (2015) 173001
[2] P. Bachor et al., J. Phys. B. 49 (2016) 154004