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Essay on quantum computing
Essay on quantum computing
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Fundamental Differences of Quantum Computers
In the standard architecture of computer storage, values are arranged as a series of bits, each of which is either true or false(0 or 1). This fundamental restriction of two states is the most basic difference when working with quantum states. Rather than allowing just the two singles states, a superposition of the two states is also possible, forming a state that is neither 0 nor 1, but something in between with a probability of either state.
Further, in the standard organization, it is possible to attach various bits together to force correlations between their values. This is also possible within the superposition of the states represented in a quantum bit. (Qubit) The correlation between these superpositions in the two qubits is referred to as Entanglement.
With proper tying it is possible to evaluate the qubit as both one and zero at the same time, and do so across the entirety of the set of qubits at the same time, allowing for massively parallel evaluations of all possible sequences at the same time. Of course in the end there can only be a single full set for the stable state, but information can be gathered from each of the possibilities by its influence upon the whole system during each step of the evaluation.
History of Quantum Computers
Initially the famous physicist Robert Feynman breached the subject of using quantum effects for computation in 1982, though his primary interest was in using the effects of one quantum effect to simulate another. Three years later in 1985 David Deutsch of the University of Oxford published a paper detailing the workings of a universal quantum computer, detailing the functionality of the theoretical process, but not...
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...e technological barrier has not progressed so far as to allow convenient usage.
At every stage of production the quantum computer has a great deal of work that needs to be done, and each step must be painstakingly analyzed and protected from the harsh environment that surrounds the extremely delicate system.
Even once such systems can be produced for small experiments to confirm the effects we seek, it will be quite some time before the production techniques and applications are so well refined as to allow for mass production or even a working prototype.
More importantly, there does not seem to be any choice but to move to these systems. As our computers become more and more compact, the effects of quantum events are going to make themselves first known and then become overwhelming. The solutions appear to be evolution or stagnation.
The novel, Alice and Quantum Land, by Robert Gilmore is an adventure in the Quantum universe. Alice, a normal teenage girl, goes through quantum land and understands what quantum is and how it works. The quantum world is a difficult one to understand, as its nature is one of complex states of being, natures, principles, notions, and the like. When these principles or concepts are compared with the macro world, one can find great similarities and even greater dissimilarities between the world wherein electrons rule, and the world wherein human beings live. In Alice in Quantumland, author Robert Gilmore converts the original tale of Alice in Wonderland from a world of anthropomorphic creatures into the minute world of quantum mechanics, and attempts to ease the reader into this confusing world through a series of analogies (which comprise an allegory) about the principles of quantum mechanics. Through Alice’s adventure she comes across some ideas or features that contradict real world ideas. These ideas are the following: Electrons have no distinguishing spin, the Pauli Exclusion Principle, Superposition, Heisenberg Uncertainty Principle, and Interference and Wave Particle Duality.
The idea of parallel realities has existed within the literary circle of science fiction for many years. One of the key concepts behind alternate dimensions is that with every action and decision - whether it is consciously made or not - another alternate dimension has the opposite action or decision made, and that there are subsequent realities created in which every other option exists uniquely. Ursula LeGuin's short story "Schrödinger's Cat" is a direct manifestation of the idea of paralleled realities in that the story deals with an experiment that spawns countless paralleled realities. Merely one of the skewed realities is overseen during the course of the narration. The Schrödinger "Gedankenexperiment" ("thinking experiment" in German) is a hypothetical situation in which a cat is placed in a sealed box with a gun and a photon emitter that has a fifty percent chance of firing the gun and killing the cat, and a fifty percent chance of not firing the gun and not killing the cat(2230). The possibility for other outcomes remains ever present, although infinitesimally slim with the percentage of anything else occurring. "We cannot predict the behavior of the photon, and thus, once it has behaved, we cannot predict the state of the system it has determined. We cannot predict it! God plays dice with the world!" (2230) The three characters who appear within "Schrödinger's Cat" act as the different variables within an experiment: the control; the dependent variable; and the independent variable. Each of these characters exists and does not exist within any reality and their existence (or lack of) is dependent upon time and which timeline they are involved i...
The study of neurobiology has long involved the actions and interactions among neurons and their synapses. Changes in concentrations of various ions carry impulses to and from the central nervous system and are responsible for all the information processed by the nervous system as a whole. This has been the prominent theory for many years, but, now, there is a new one to be reckoned with; the Quantum Brain Theory (QBT). Like many new theories, the QBT has merits and flaws. Many people are wholeheartedly sold on it; however, this vigor might be uncalled for. Nevertheless, this could prove to be a valid and surprisingly accurate theory of brain function.
This Essay is meant to shed light on a complex subject, quantum entanglement. Now, quantum entanglement is a part of much more complex subjects, such as classical mechanics, quantum theory, and quantum mechanics; these subjects will not be covered. The idea of quantum entanglement will be explained: What it is and when does it happen. After a little understanding of Entanglement, a discussion will follow on what it means for us from a technological standpoint and what can we accomplish in the near future. Pushing that idea further into the future looking at bigger possibilities in transportation, and what potential liabilities and moral dilemmas could ensue. It is my belief that quantum entanglement could accomplish many great things, but could
Quantum Mechanics developed over many decades beginning as a set of controversial mathematical explanations of experiments that the math of classical mechanics could not explain. It began in the turn of the 20th century, a separate mathematical revolution in physics that describes the motion of things at high speeds. The origins of Quantum Mechanics cannot be credited to any one scientists. Multiple scientists contributed to a foundation of three revolutionary principles that gradually gained acceptance and experiment verification from 1900-1930 (Coolman). Quantum Mechanics is
“A strange fact about quantum physics is that indeterminate future outcomes are seemingly governed by probabilities in the present. Quantum objects exist in "superpositions" of more than one state until such time as we measure them, when they adopt one or other of their possible forms. The most notorious illustration is Schrödinger's cat: locked in a box with a vial of poison whose seal may or may not be intact, it is simultaneously dead and alive -- until you open the box, when it is most definitely one or the other.”
Soon after his public schooling Turing began working on his undergraduate at King’s College. Here he became interested in the readings of Von Neumann’s quests into the logical foundations of quantum mechanics. Through these readings Turing was believed to structure his thinking from the emotional states that he had been suffering from to a more valid form of thought.
"Introduction to Quantum Mechanics." Wikipedia. Wikimedia Foundation, 9 Mar. 2014. Web. 12 Mar. 2014. .
Of the many counter intuitive quirks of quantum mechanics, the strangest quirk is perhaps the notion of quantum entanglement. Very roughly, quantum entanglement a phenomenon where the state of a large system cannot be described by the state of the smaller systems that compose it. On the standard metaphysical interpretation of quantum entanglement, this is taken to show that there exists emergent properties1. If this standard interpretation is correct, it seems that physics paints a far different picture of the world then commonsense leads one to believe.
Mark I. It was actually a electromechanical calculation. It is said that this was the first potentially computers. In 1951 Remington Rand’s came out with the UNIVAC it began
The computing industry as a whole becomes more prosperous, exciting and attractive as an employment prospect each day. It spans a wide range of modern applications, as does my interest in the subject. I see computing science as a gateway into new realms of computing, where the highly challenging and demanding work may reap rewards of an equivalent level.
The discovery that we can make photons act strongly together could make developing quantum computers a lot easier. this discovery is the most recent of the five having only happened last year. Normally photons don't interact “Getting photons to stick together is not easy because they normally pass through each other without interacting”(Johnson), but...
A quantum computer is one which exploits quantum-mechanical interactions in order to function; this behavior, found in nature, possesses incredible potential to manipulate data in ways unattainable by machines today. The harnessing and organization of this power, however, poses no small difficulty to those who quest after it.
In the novel Alice in Quantumland, by Robert Gilmore, Alice went on an adventure in Quantumland. As Alice traveled through the wonderful world of Quantumland, she stumbled upon an electron. She also discovered energy and learned that it can be transferred or converted into many forms, but it may not be created nor destroyed. She discovered interference and learned about it at the mechanics institute. Throughout her journey she learned all about electrons, energy, interference, particles, and bosons.
Finally in 2012 Feynman’s thought-experiment had been accurately carried out by a team of researchers. The team managed to “show a full realization of Feynman’s thought experiment and illustrate key features of quantum mechanics: interference and the wave-particle duality of matter.”