2010/05/03 by J. Dajka, J. Luczka · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physreva.82.012341
published as Phys. Rev. A 82, 012341 (2010) · 4 pages, 3 figures
arxiv created 2010/05/03 · arxiv updated 2015/05/18
Intriguing features of the distance between two arbitrary states of an open quantum system are identified that are induced by initial system-environment correlations. As an example, we analyze a qubit dephasingly coupled to a bosonic environment. Within tailored parameter regimes, initial correlations are shown to substantially increase a distance between two qubit states evolving to long-time limit states according to exact non-Markovian dynamics. It exemplifies the breakdown of the distance contractivity of the reduced dynamics.