Collective Lamb shift of a nanoscale atomic vapor layer within a sapphire cavity

Peyrot, Tom; Keaveney, James; Sortais, Yvan R.P.; Sargsyan, Armen; Sarkisyan, David; Hughes, Ifan G.; Browaeys, Antoine; Adams, Charles S.

Abstract

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.

Citation

Peyrot, T., Keaveney, J., Sortais, Y. R., Sargsyan, A., Sarkisyan, D., Hughes, I. G., …Adams, C. S. (2018). Collective Lamb shift of a nanoscale atomic vapor layer within a sapphire cavity. Physical Review Letters, 120(24), Article 243401. https://doi.org/10.1103/physrevlett.120.243401

• Journal Article Type: Article
• Acceptance Date: May 10, 2018
• Online Publication Date: Jun 12, 2018
• Publication Date: Jun 12, 2018
• Deposit Date: May 17, 2018
• Publicly Available Date: Jun 15, 2018
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 120
• Issue: 24
• Article Number: 243401
• DOI: https://doi.org/10.1103/physrevlett.120.243401
• Public URL: https://durham-repository.worktribe.com/output/1358537