Results 101 to 110 of about 104,281 (223)
A hybrid quantum walk model unifying discrete and continuous quantum walks
npj Quantum InformationQuantum walks, both discrete and continuous, serve as fundamental tools in quantum information processing with diverse applications. This work introduces a hybrid quantum walk model that integrates the coin mechanism of discrete walks with the ...
Tianen Chen, Yun Shang
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Observation of quasiperiodic dynamics in a one-dimensional quantum walk of single photons in space
New Journal of Physics, 2014 We realize the quasi-periodic dynamics of a quantum walker over 2.5 quasi-periods by realizing the walker as a single photon passing through a quantum-walk optical-interferometer network.
Peng Xue +3 more
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Quantum Walks: A Markovian Perspective [PDF]
, 2008 For a continuous-time quantum walk on a line the variance of the position observable grows quadratically in time, whereas, for its classical counterpart on the same graph, it exhibits a linear, diffusive, behaviour. A quantum walk, thus, propagates at a rate which is linear in time, as compared to the square root rate for a classical random walk ...
D. de Falco, D. Tamascelli
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Localization of space-inhomogeneous three-state quantum walks
, 2021 Chusei Kiumi
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Deterministic discrete-time quantum walk search on complete bipartite graphs
Physical Review ResearchSearching via quantum walk is a topic that has been extensively studied. Most previous results provide approximate solutions, while in this paper we prove an algorithm that can find a marked vertex certainly.
Fangjie Peng, Meng Li, Xiaoming Sun
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A Novel Bulk-Optics Scheme for Quantum Walk with High Phase Stability
Condensed Matter, 2019 A novel bulk optics scheme for quantum walks is presented. It consists of a one-dimensional lattice built on two concatenated displaced Sagnac interferometers that make it possible to reproduce all the possible trajectories of an optical quantum walk ...
Andrea Geraldi +4 more
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Relation between random walks and quantum walks
Physical Review A, 2015 Based on studies on four specific networks, we conjecture a general relation between the walk dimensions $d_{w}$ of discrete-time random walks and quantum walks with the (self-inverse) Grover coin. In each case, we find that $d_{w}$ of the quantum walk takes on exactly half the value found for the classical random walk on the same geometry. Since walks
Boettcher, Stefan +2 more
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Percolation assisted excitation transport in discrete-time quantum walks
New Journal of Physics, 2016 Coherent transport of excitations along chains of coupled quantum systems represents an interesting problem with a number of applications ranging from quantum optics to solar cell technology.
M Štefaňák, J Novotný, I Jex
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Long-lived quantum speedup based on plasmonic hot spot systems
New Journal of Physics, 2019 Long-lived quantum speedup serves as a fundamental component for quantum algorithms. The quantum walk is identified as an ideal scheme to realize the long-lived quantum speedup. However, one finds that the duration of quantum speedup is too short in real
Jun Ren, Tian Chen, Xiangdong Zhang
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The spreading behavior of quantum walks induced by drifted random walks on some magnifier graph [PDF]
, 2015 Yusuke Higuchi, Etsuo Segawa
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