Steady state properties of a driven atomic ensemble with non-local dissipation
| Autor: | Olmos, B., Yu, D., Lesanovsky, I. |
|---|---|
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 89, 023616 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.89.023616 |
| Popis: | The steady state of a driven dense ensemble of two-level atoms is determined from the competition of coherent laser excitation and decay that acts in a correlated way on several atoms simultaneously. We show that the presence of this non-local dissipation lifts the direct link between the density of excited atoms and the photon emission rate which is typically present when atoms decay independently. The non-locality disconnects these static and dynamic observables so that a dynamical transition in one does not necessarily imply a transition in the other. Furthermore, the collective nature of the quantum jump operators governing the non-local decay results in the formation of spatial coherence in the steady state which can be measured by analyzing solely global quantities - the photon emission rate and the density of excited atoms. The experimental realization of the system with strontium atoms in a lattice is discussed. Comment: 5 pages, 4 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|