| Autor: |
Ma, J., Zhang, H., Lavorel, B., Billard, F., Hertz, E., Wu, J., Boulet, C., Hartmann, J. -M., Faucher, O. |
| Rok vydání: |
2019 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1038/s41467-019-13706-0 |
| Popis: |
Energy transfer through quantum coherences plays an essential role in diverse natural phenomena and technological applications, such as human vision, light-harvesting complexes, quantum heat engines, and quantum information and computing. The understanding of the long-lived coherence involved in these phenomena requires a detailed modeling of the system-bath interactions beyond the so-called secular and/or Markovian approximations. Despite continuous theoretical progress on understanding nonsecular dynamics in the last decades, convincing experimental observations are still lacking. By using the laser-kicked molecular rotor as a model system, we here experimentally unveil the nonsecular dynamics in the rotational relaxation of molecules due to thermal collisions. Specifically, the rotational coherence in gas-phase molecules is systematically probed and characterized by the recently discovered rotational alignment echoes featuring a decoherence and dissipation process which can only be explained by the nonsecular quantum master equations for modeling molecular collisions. |
| Databáze: |
arXiv |
| Externí odkaz: |
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