560 citations · 1.2k across the 13 of their papers we have counts for
13 papers
Quantum Walks
Daniel Reitzner, Daniel Nagaj, Vladimir Buzek
This tutorial article showcases the many varieties and uses of quantum walks. Discrete time quantum walks are introduced as counterparts of classical random walks. The emphasis is…
Unambiguous coherent state identification: Searching a quantum database
Michal Sedlak, Mario Ziman, Ondrej Pribyla +2
We consider an unambiguous identification of an unknown coherent state with one of two unknown coherent reference states. Specifically, we consider two modes of an electromagnetic…
Bounds on action of local quantum channels
Peter Stelmachovic, Vladimir Buzek
We derive an upper bound on the action of a direct product of two quantum maps (channels) acting on multi-partite quantum states. We assume that the individual channels affec…
When Non-Gaussian States are Gaussian: Generalization of Non-Separability Criterion for Continuous Variables
Derek McHugh, Vladimír Bužek, Mário Ziman
We present a class of non-Gaussian two-mode continuous variable states for which the separability criterion for Gaussian states can be employed to detect whether they are separable…
Scattering model for quantum random walk on the hypercube
Jozef Košík, Vladimír Bužek
We elaborate on a model of quantum random walk proposed by Hillery et. al., and Jeong et. al., which uses the multiports for quantum "coin tossing". The dynamics of this model is a…
Wigner-function description of quantum teleportation in arbitrary dimensions and continuous limit
M. Koniorczyk, V. Buzek, J. Janszky
We present a unified approach to quantum teleportation in arbitrary dimensions based on the Wigner-function formalism. This approach provides us with a clear picture of all manipul…