European Conference on Trapped Ions (ECTI)

An amazing level of quantum control is routinely reached in modern experiments with atoms, but similar control over molecules has been an elusive goal. A method based on quantum logic spectroscopy [1] can address this challenge for a wide class of molecular ions [2,3]. We have now realized many basic aspects of this proposal.

In our demonstrations, we trap a calcium ion together with a...

We demonstrate a novel single molecule action-spectroscopy technique that is compatible with high precision measurement. The method is generally applicable to a wide range of polyatomic molecular ions, and promises spectral resolution comparable to state of the art quantum logic methods, with significantly less stringent experimental overhead. The method is an extension of the recent...

Modern space and Earth-based telescopes like JWST and ALMA are able to provide us with increasingly detailed insight into the molecular composition of interstellar space. These instruments are able to identify the different species and determine their abundance. However, information on the processes of formation and destruction of molecules in this environment is still needed. Laboratory...

Experiments with single ions confined in a Penning trap enable access to a broad range of observables that are of fundamental importance for our understanding of fundamental physics. In the magnetic field of the trap, the cyclotron frequency of an ion can be determined with unique precision and gives direct access to the charge-to-mass ratio. Furthermore, we have access to the gyromagnetic...

Polar molecular ions in extreme charge states have the potential to merge advantages that highly-charged atomic ions and neutral polar molecules offer, when performing precision tests of fundamental physics. As we have discussed in Ref. 1, one can expect to benefit from enhanced relativistic effects and compressed level structures on the one hand and large internal fields with considerable...

We recently placed a new limit on parity-violating physics with a unique tabletop experiment which combines trapped molecular ions,
rotating bias fields, orientation-resolved detection, and over a dozen lasers. In this talk I will give an overview of our measurement and methods for probing new physics at energy scales exceeding the reach of the LHC.