Quantum walks, the quantum mechanical counterpart of classical random walks, is an advanced tool for building quantum algorithms that has been recently shown to constitute a …
We theoretically study a one-dimensional (1D) mutually incommensurate bichromatic lattice system, which has been implemented in ultracold atoms to study quantum localization. It has …
JK Asbóth - Physical Review B—Condensed Matter and Materials …, 2012 - APS
Discrete-time quantum walks have been shown to simulate all known topological phases in one and two dimensions. Being periodically driven quantum systems, their topological …
H Obuse, N Kawakami - Physical Review B—Condensed Matter and Materials …, 2011 - APS
We investigate one-dimensional (1D) discrete-time quantum walks (QWs) with spatially or temporally random defects as a consequence of interactions with random environments. We …
H Obuse, JK Asbóth, Y Nishimura, N Kawakami - Physical review B, 2015 - APS
Quantum walks, whose dynamics is prescribed by alternating unitary coin and shift operators, possess topological phases akin to those of Floquet topological insulators, driven …
A Avila, S Jitomirskaya, CA Marx - Inventiones mathematicae, 2017 - Springer
The extended Harper's model, proposed by DJ Thouless in 1983, generalizes the famous almost Mathieu operator, allowing for a wider range of lattice geometries (parametrized by …
Trapping a particle of a quantum walk on the line Page 1 PHYSICAL REVIEW A 85, 012329 (2012) Trapping a particle of a quantum walk on the line Antoni Wójcik,1 Tomasz Łuczak,2 …
A Ahlbrecht, VB Scholz, AH Werner - Journal of Mathematical Physics, 2011 - pubs.aip.org
We study a spin-| $\frac {1}{2} $| 1 2-particle moving on a one-dimensional lattice subject to disorder induced by a random, space-dependent quantum coin. The discrete time evolution …
We study Anderson localization in a generalized discrete-time quantum walk—a unitary map related to a Floquet driven quantum lattice. It is controlled by a quantum coin matrix which …