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Classification of Quantum Cellular Automata [PDF]

open access: yesCommunications in Mathematical Physics, 2022
There exists an index theory to classify strictly local quantum cellular automata in one dimension. We consider two classification questions. First, we study to what extent this index theory can be applied in higher dimensions via dimensional reduction ...
Hastings, M. B., Freedman, M.
core   +3 more sources

Renormalisation of Quantum Cellular Automata [PDF]

open access: yesQuantum
We study a coarse-graining procedure for quantum cellular automata on hypercubic lattices that consists in grouping neighboring cells into tiles and selecting a subspace within each tile.
Alessandro Bisio   +2 more
core   +5 more sources

A Quantum Cellular Automata Type Architecture with Quantum Teleportation for Quantum Computing [PDF]

open access: yesEntropy (Basel), 2019
We propose an architecture based on Quantum Cellular Automata which allows the use of only one type of quantum gate per computational step, using nearest neighbor interactions.
Ntalaperas D, Giannakis K, Konofaos N.
europepmc   +2 more sources

A review of quantum cellular automata [PDF]

open access: yesQuantum, 2020
Discretizing spacetime is often a natural step towards modelling physical systems. For quantum systems, if we also demand a strict bound on the speed of information propagation, we get quantum cellular automata (QCAs).
Farrelly, Terry
core   +6 more sources

An overview of Quantum Cellular Automata [PDF]

open access: yesNatural Computing, 2019
International audienceQuantum cellular automata consist in arrays of identical finite-dimensional quantum systems, evolving in discrete-time steps by iterating a unitary operator G.
Arrighi, Pablo
core   +6 more sources

Quantum Cellular Automata [PDF]

open access: yes, 2021
Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2021, Tutors: Sofyan Iblisdir, Alberto Ruiz de AlarcónQuantum Cellular Automata (QCA) are lattices with a quantum system at each site that have discrete time evolution
Conchello Vendrell, Raul
core   +3 more sources

Quantum Electrodynamics from Quantum Cellular Automata, and the Tension Between Symmetry, Locality, and Positive Energy. [PDF]

open access: yesEntropy (Basel)
Recent work has demonstrated a correspondence that bridges quantum information processing and high-energy physics: discrete quantum cellular automata (QCA) can, in the continuum limit, reproduce quantum field theories (QFTs).
Brun TA, Mlodinow L.
europepmc   +2 more sources

Density Classification with Non-Unitary Quantum Cellular Automata. [PDF]

open access: yesEntropy (Basel)
The density classification (DC) task, a computation which maps global density information to local density, is studied using one-dimensional non-unitary quantum cellular automata (QCAs).
Wagner E   +3 more
europepmc   +2 more sources

Local unitary quantum cellular automata [PDF]

open access: yesPhysical Review A, 2007
In this paper we present a quantization of cellular automata. Our formalism is based on a lattice of qudits and an update rule consisting of local unitary operators that commute with their own lattice translations.
Pérez-Delgado, Carlos A, Cheung, Donny
core   +4 more sources

Time asymptotics and entanglement generation of Clifford quantum cellular automata

open access: yesJournal of Mathematical Physics, 2010
We consider Clifford quantum cellular automata (CQCAs) and their time-evolution. CQCAs are an especially simple type of quantum cellular automata, yet they show complex asymptotics and can even be a basic ingredient for universal quantum computation.
Johannes Gutschow   +2 more
exaly   +3 more sources

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