Intercombination Effects in Resonant Energy Transfer
| Autor: | Vaillant, C. L., Potvliege, R. M., Jones, M. P. A. |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 92, 042705 2015 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.92.042705 |
| Popis: | We investigate the effect of intercombination transitions in excitation hopping processes such as those found in F\"orster resonance energy transfer. Taking strontium Rydberg states as our model system, the breakdown of $LS$-coupling leads to weakly allowed transitions between Rydberg states of different spin quantum number. We show that the long-range interactions between two Rydberg atoms can be affected by these weakly allowed spin transitions, and the effect is greatest when there is a near-degeneracy between the initial state and a state with a different spin quantum number. We also consider a case of four atoms in a spin chain, and show that a spin impurity can resonantly hop along the chain. By engineering the many-body energy levels of the spin-chain, the breakdown of $LS$ coupling due to inter-electronic effects in individual atoms can be mapped onto a spatial separation of the total spin and the total orbital angular momentum along the spin chain. Comment: 7 pages, 5 figures. Accepted version |
| Databáze: | arXiv |
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