46 citations · 259 across the 20 of their papers we have counts for
7 papers · 1 filter
Mixing Times in Quantum Walks on the Hypercube
F. L. Marquezino, R. Portugal, G. Abal +1
The mixing time of a discrete-time quantum walk on the hypercube is considered. The mean probability distribution of a Markov chain on a hypercube is known to mix to a uniform dist…
Asymptotic entanglement in the discrete-time quantum walk
G. Abal, R. Donangelo, H. Fort
The coin-position entanglement generated by the evolution operator of a discrete--time quantum walk converges, in the long time limit, to a well defined value which depends on the…
Decoherent quantum walks driven by a generic coin operation
G. Abal, R. Donangelo, F. Severo +1
We consider the effect of different unitary noise mechanisms on the evolution of a quantum walk (QW) on a linear chain with a generic coin operation: (i) bit-flip channel noise, re…
Emergence of scale-free behavior in networks from limited-horizon linking and cost trade-offs
Valmir C. Barbosa, Raul Donangelo, Sergio R. Souza
We study network growth from a fixed set of initially isolated nodes placed at random on the surface of a sphere. The growth mechanism we use adds edges to the network depending on…
Simulation of the Single- and Double-Slit Experiments with Quantum Walkers
Amanda C. Oliveira, Renato Portugal, Raul Donangelo
We employ the broken-link model to create a barrier with slits in a two-dimensional lattice. The diffraction and interference patterns of the probability distribution of quantum wa…
Effects of geometric constraints on the nuclear multifragmentation process
S. R. Souza, R. Donangelo, W. G. Lynch +1
We include in statistical model calculations the facts that in the nuclear multifragmentation process the fragments are produced within a given volume and have a finite size. The c…