Quantum cellular automata pdf files

This repository contains everything related to my phd thesis. Latex source files directory tex graphics directory gfx graphs directory plots numerical data to produce the graphs directory experiments ipython notebooks which generate the graphs from the data directory. It is natural then, to extend the models of cellular automata to encompass what we believe about nature and computation. Moreover the global evolution g is required to be causal it propagates information at a bounded speed and translationinvariant it acts everywhere the same. It is a revolutionary approach which addresses the issues of device density and. Quantum cellular automata consist in arrays of identical finitedimensional quantum systems, evolving in discretetime steps by iterating a unitary operator g. In this report we attempt to provide a useful introduction to quantum cellular automata from a computing perspective.

Characterizing quantum dot cellular automata overview. The quantum version of the classical cellular automata has many advantages over the classical model. But whether qca in general and the proposed circuits in. The quantum cellular automata qca uses quantum parallelism, which makes it possible to address the cells simultaneously, in parallel, hence the behaviour of a qca can be controlled globally.

Quantum cellular automata controlled selforganizing networks. The global updating mechanism of the qca model makes. Quantum dot cellular automata qca is a promising architecture which employs quantum dots for digital computation. Motivated by this observation, we begin an investigation of exactly unitary cellular automata. Not only the world of atoms and subatomic particles. A natural architecture for nanoscale quantum computation is that of a quantum cellular automaton. The authors formulate a new paradigm for computing with cellular automata cas composed of arrays of quantum devices quantum cellular automata. Accordingly, the design of reversible qca circuits is an active eld of research. A near zeroenergy computation using quantumdot cellular. From quantum cellular automata to quantum lattice gases. Quantum dot cellular automata qca is an emerging nanotechnology that promises faster speed, smaller size, and lower power consumption compared to the transistorbased technology.