Conveners
Mainz satellite meeting + hybrid ECTI: Mainz satellite meeting
- Christian Smorra
Mainz satellite meeting + hybrid ECTI: Mainz satellite meeting
- Björn Lektisch
Negative molecular ions have drawn a lot of attention in recent years, because of their detection in interstellar space and of opportunities to use laser-cooled anions to cool antiproton. Cryogenic radiofrequency ion traps are well suited tools to study the quantum states and state-selected chemistry of negative ions. Using photodetachment spectroscopy we have probed rotational quantum states...
The PENTATRAP experiment located at the Max-Planck Institute for nuclear physics aims to perform mass-ratio measurements on long-lived and stable nuclides with a fractional uncertainty below 1e-11. Such high-precision mass-ratio measurements are required to assist, e.g., experiments on the determination of the neutrino mass, on the search for the fifth force and on the investigation of atomic...
The complexity and variety of molecules offer opportunities for metrology and quantum information that go beyond what is possible with atomic systems. The hydrogen molecular ion is the simplest of all molecules and can thus be calculated ab initio to very high precision [1]. Combined with spectroscopy this allows to determine fundamental constants and test fundamental theory at record...
Trapped-ion quantum technology is among the most promising candidates for the realization of a scalable quantum processor. To address individual ions and perform high-fidelity two-qubit entangling gates in a linear segmented Paul trap, we employ dynamical register reconfiguration operations to place specific qubits in a laser interaction zone. To realize fault-tolerant quantum information...
Large trapped ion crystals with N > 100 ions provide a versatile platform for quantum simulations.
Penning traps utilize static electric and magnetic fields to confine the ions and enable the
formation of large two-dimensional ion crystals with hundreds of ions. In this talk, I will discuss
recent results of electro-magnetically induced transparency (EIT) cooling that enables...
Trapped ions confined in radiofrequency traps offer an excellent degree of control, in terms of unitary operations, initialization and readout. Furthermore, advanced techniques can be employed to control external (motional) degrees of freedom. Complementing the toolbox with non-unitary operations such depolarization channels or controlled coupling to microscopic environments (ancillas) renders...
I will review two experimental developments and its applications to experiments with ion traps. First I will show how we implemented phase-stable optical forces on trapped ions, and will discuss several applications, both realized and planned. These include: spin-dependent kicking which lead to the realization of a spin heat engine, the possibility of generating giant cats, and a special kind...
We present the experimental characterization of coherence of light scattered from trapped ion crystals. We study the first and second order coherences and their dependence on the number of optical modes of employed detection setups. We show how the indistinguishable contributions from a large number of ions result in the measurement of photon bunching in a single-mode Hanbury-Brown and Twiss...
