2018/01/31 by T. Peyrot, Yvan R. P. Sortais, Y. R. P. Sortais +9 · 77 citations
Engineering · Physics and Astronomy · #Atomic physics #Condensed matter physics #Lamb shift #Laser #Materials science #Measure (data warehouse) #Mechanical and Optical Resonators #Molecular physics #Nanometre #Nanoscopic scale #Nanotechnology #Optics #Physics #Quantum mechanics #Quantum optics and atomic interactions #Resonance (particle physics) #Sapphire #Terahertz technology and applications #physics.atom-ph #physics.optics
paper · pdf · doi:10.1103/physrevlett.120.243401
published in Physical Review Letters 120(24), 243401 (American Physical Society)
arxiv created 2018/04/17 · openalex publication_date 2018/06/12 · arxiv updated 2018/06/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We measure the near-resonant transmission of light through a dense medium of potassium vapor confined in a cell with nanometer thickness in order to investigate the origin and validity of the collective Lamb shift. A complete model including the multiple reflections in the nanocell reproduces accurately the observed line shape. It allows the extraction of a density-dependent shift and width of the bulk atomic medium resonance, deconvolved from the cavity effect. We observe an additional, unexpected dependence of the shift with the thickness of the medium. This extra dependence demands further experimental and theoretical investigations.