A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Continuous-time quantum walks on spatially correlated noisy lattices
Tekijät: Rossi MAC, Benedetti C, Borrelli M, Maniscalco S, Paris MGA
Kustantaja: AMER PHYSICAL SOC
Julkaisuvuosi: 2017
Journal: Physical Review A
Tietokannassa oleva lehden nimi: PHYSICAL REVIEW A
Lehden akronyymi: PHYS REV A
Artikkelin numero: ARTN 040301
Vuosikerta: 96
Numero: 4
Sivujen määrä: 5
ISSN: 2469-9926
eISSN: 2469-9934
DOI: https://doi.org/10.1103/PhysRevA.96.040301
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/27880882
We address memory effects and diffusive properties of a continuous-time quantum walk on a one-dimensional percolation lattice affected by spatially correlated random telegraph noise. In particular, by introducing spatially correlated time-dependent fluctuations in nearest-neighbor hopping amplitudes, we describe random domains characterized by global noise. The resulting open dynamics of the walker is then unraveled by an ensemble average over all the noise realizations. Our results show that time-dependent noise assisted by spatial correlations leads to strong memory effects in the walker dynamics and to robust diffusive behavior against the detrimental action of uncorrelated noise. We also show that spatially correlated classical noise enhances localization breaking, thus making a quantum particle spread on longer distances across the lattice.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
