Tailoring interactions with light and Rydberg states

Han Bao, Alexander Schulze-Makuch, Ferdinand Schmidt‐Kaler

We are using optical- and microwave-fields to excite Rydberg states in trapped cold 40Ca+ ions. We employ a single ion and observe spectroscopically in the manifold of a principal quantum number n=49 the dressing of Rydberg states of angular momentum states S and P. We compare our experimental spectra with a multi-level calculation of dressed states and find good agreement. The results are important for controlling the interaction of single ions in Rydberg states with electric fields of the ion trap, and for tailoring the interactions in an ion crystal in Rydberg states.

Jonathan D. Pritchard

Elena Murgu

Han Bao, Alexander Schulze-Makuch, Ferdinand Schmidt‐Kaler

Abstract We are using optical and microwave fields to excite Rydberg states in trapped cold ions. We employ a single ion and observe spectroscopically in the manifold of a principal quantum number n = 49 the dressing of Rydberg states of angular momentum states S and P. We compare our experimental spectra with a multi-level calculation of dressed states and find good agreement. The results are important for controlling the interaction of single ions in Rydberg states with electric fields of the ion trap and for tailoring the interactions in an ion crystal in Rydberg states.

Valentina Parigi, Erwan Bimbard, Jovica Stanojevic +2 more

Aswathy Raj, Veronika Giricz, Dylan Brown +2 more

Complete control of light-matter interactions at a single quantum level is critical for quantum science applications such as precision measurements and information processing. Nanophotonic devices, developed with recent advancements in nanofabrication techniques, can be used to tailor the interactions between single photons and atoms. One example of such a device is the optical nanofibre, which provides an excellent platform due to the strongly confined transverse light fields, long interaction length, low loss, and diverse optical modes. This facilitates a strong interaction between atoms and guided light, revealing chiral atom-light processes and the prospect of waveguide quantum electrodynamics. This work highlights recent advances on optical nanofiber mediated excitation of cold rubidium Rydberg atoms for the creation of a 1D Rydberg array.