Our paper Coherent Manipulation of Single Electrons with Optical Photons in Condensed Helium-4 hits the cover.
A single electron forms a nanometric quantum bubble in superfluid helium-4 and can strongly interact with mid-infrared photons, as shown by Dafei Jin and co-workers in article number 2000008. Real-time density functional simulation shows that an ultrafast laser pulse can bring the electron into quantum superpositions between the ground and excited states. The electron wavefunction can deform into a peanut shape or split into two fractions, displaying remarkable nonequilibrium quantum dynamics.
More information: Matthew Otten et al, Coherent Manipulation of Single Electrons with Optical Photons in Condensed Helium-4, Advanced Theory and Simulations 3, 2000008 (2020). https://doi.org/10.1002/adts.202000008