Initial system-environment correlations via the transfer-tensor method

Journal ar
Physical Review A
  • Volumen: 96
  • Número: 6
  • Fecha: 19 December 2017
  • ISSN: 24699934 24699926
  • Source Type: Journal
  • DOI: 10.1103/PhysRevA.96.062122
  • Document Type: Article
  • Publisher: American Physical
© 2017 American Physical Society.Open quantum systems exhibiting initial system-environment correlations are notoriously difficult to simulate. We point out that given a sufficiently long sample of the exact short-time evolution of the open system dynamics, one may employ transfer tensors for the further propagation of the reduced open system state. This approach is numerically advantageous and allows for the simulation of quantum correlation functions in hardly accessible regimes. We benchmark this approach against analytically exact solutions and exemplify it with the calculation of emission spectra of multichromophoric systems as well as for the reverse temperature estimation from simulated spectroscopic data. Finally, we employ our approach for the detection of spectral signatures of electromagnetically induced transparency in open three-level systems.

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