Rostock 2019 – scientific programme

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SYAD: Symposium SAMOP Dissertation-Prize 2019

SYAD 1: SAMOP Dissertation-Prize

SYAD 1.4: Invited Talk

Tuesday, March 12, 2019, 12:00–12:30, U Audimax

Motional quantum state engineering for quantum logic spectroscopy of molecular ions — •Fabian Wolf — QUEST Institut, Physikalisch-Technische Bundesanstalt, Braunschweig, Germany

Precision spectroscopy has been a driving force for the development of our physical understanding. In particular laser cooling and manipulation improved the achievable precision. However, only few atomic and molecular species offer suitable transitions for laser cooling. This restriction can be overcome in trapped ion systems through quantum logic spectroscopy. Coherent laser manipulation, originally developed in the context of quantum information processing, allows to combine the special spectroscopic properties of one ion species (spectroscopy ion) with the excellent control over another species (logic ion).

In my talk, I will present the first implementation of a quantum logic assisted scheme for reading out the internal state of a molecular ion. In this scheme, an atomic Mg-ion is used to detect a state dependent force that acts on the molecular MgH-ion. Furthermore, a quantum-enhanced force sensing protocol is demonstrated, which can be applied to the previously described measurement, but has further applications in the general field of quantum metrology.