It is a huge challenge to measure long-range atom–surface interactions, the Casimir–Polder effects, at elevated temperatures. Here, Laliotis et al.report a spectroscopic measurement on caesium atoms approximately 100 nm away from a hot sapphire surface, influenced by the thermal excitation of surface modes.
- Athanasios Laliotis
- Thierry Passerat de Silans
- Daniel Bloch