Recovering the Homogeneous Absorption of Inhomogeneous Media
| Autor: | Ohr Lahad, Eilon Poem, Ofer Firstenberg, Ohad Michel, Ran Finkelstein, Omri Davidson |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Quantum optics
Quantum Physics Materials science Physical system Absorption cross section FOS: Physical sciences General Physics and Astronomy 01 natural sciences Resonance (particle physics) Molecular physics Homogeneous 0103 physical sciences Limit (mathematics) Limit set Quantum Physics (quant-ph) 010306 general physics Absorption (electromagnetic radiation) Physics - Optics Optics (physics.optics) |
| Zdroj: | Physical Review Letters |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.123.173203 |
| Popis: | The resonant absorption of light by an ensemble of absorbers decreases when the resonance is inhomogeneously broadened, as only a fraction of the ensemble contributes to the absorption at any given optical frequency. Recovering the lost absorption cross-section is of great importance for various applications of light-matter interactions, particularly in quantum optics and for few-photon nonlinearities. However, no recovery mechanism has yet been identified and successfully demonstrated. Here, we first formulate the limit set by the inhomogeneity on the absorption and then present a mechanism able to circumvent this limit and fully recover the homogeneous absorption of the ensemble. We experimentally study this mechanism using hot atomic vapor and demonstrate a 5-fold enhancement of the absorption above the inhomogeneous limit. Our scheme relies on light shifts induced by auxiliary fields and is thus applicable to various physical systems and inhomogeneity mechanisms. Comment: 5 pages, 5 figures |
| Databáze: | OpenAIRE |
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