Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 68: Quantum Information (Concepts and Methods) V
Q 68.8: Talk
Friday, March 9, 2018, 12:15–12:30, K 1.019
Initial System-Environment Correlations via the Transfer Tensor Method — Maximilian Buser1,2, •Javier Cerrillo1, Gernot Schaller1, and Jianshu Cao2 — 1Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, D-10623 Berlin, German — 2Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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.