Emerging quantum structures: From crystals of ions to crystals of solitons (CRYSOL)

• Applicants: Professorin Dr. Giovanna Morigi; Professor Dr. Ferdinand Schmidt-Kaler
• Subject Area: Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: since 2026
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 577923538

Crystals of trapped atomic ions feature an ideal platform for investigating quantum cooperative dynamics, because they allow for near-to-perfect observation and manipulation of the quantum dynamics at different length scales. A wide range of trapping and cooling techniques enables one to tailor the vibrational mode spectrum and thereby to design effective interactions between the ions internal degrees of freedom. Structural dislocations and defects are collective properties, that can be spectroscopically resolved, cooled, and manipulated. Theoretical studies show that localised defects interact via the long-range Coulomb interactions, behaving as charged quasi-particles, which can build structures to-date unexplored. The project CRYSOL aims at providing a comprehensive characterization of the static and dynamical properties of kink- and soliton-like defects in ion chains, from the semiclassical down to the full quantum regime. The endeavour is lead by an experimental and theoretical PI, who have been pioneering the physics of ion Coulomb crystals and have an excellent track record of collaborations. In CRYSOL we pursue the characterization of the emerging dynamics of kinks and solitons in ion chains for the purpose of unveiling and controlling these structures at the quantum level. The concept of CRYSOL will contribute to the general understanding of the mechanisms that lead to the formation of complex structures, starting from a microscopic quantum system.

• DFG Programme: Research Grants