Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 31: Poster: Quantum Optics and Photonics II

Q 31.7: Poster

Dienstag, 24. März 2015, 17:00–19:00, C/Foyer

Motional state analysis of a linear ion crystal — •Jana Harlos¹, Govinda Clos¹, Diego Porras², Ulrich Warring¹, and Tobias Schaetz¹ — ¹Physikalisches Institut, Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany — ²School of Mathematical and Physical Sciences, University of Sussex, Brighton BN1 9RH, UK

Stored atomic ions in a linear Paul trap provide a promising platform for experimental quantum simulations.
A mixed crystal of different Mg isotopes of choice enables the simulation of a single spin in an environment of harmonic oscillators - the spin-boson model. This is realized by coherently coupling the spin system to the vibrational modes of all the ions in the chain with two-photon stimulated Raman transitions [1].
A necessary prerequisite for quantum simulations of this model is the precise knowledge and control of the initial state: To this end, we use sympathetic sideband cooling to prepare the motional ground state, we tailor specific motional state distributions and verify the adjusted simulation parameters by numerical analysis of the recorded state evolutions.

[1] D. Porras, F. Marquardt, J. von Delft, and J. I. Cirac, Phys. Rev. A 78, 010101 (2008).