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Quantum computer

Quantum computer
The Bloch sphere is a representation of a qubit, the fundamental building block of quantum computers. As of 2014[update] quantum computing is still in its infancy but experiments have been carried out in which quantum computational operations were executed on a very small number of qubits.[6] Both practical and theoretical research continues, and many national governments and military funding agencies support quantum computing research to develop quantum computers for both civilian and national security purposes, such as cryptanalysis.[7] Large-scale quantum computers will be able to solve certain problems much more quickly than any classical computer using the best currently known algorithms, like integer factorization using Shor's algorithm or the simulation of quantum many-body systems. Basis[edit] A classical computer has a memory made up of bits, where each bit represents either a one or a zero. A quantum computer maintains a sequence of qubits. states at any one time). and , or ).

Related:  Wikipedia AQuantum Computing

Flapper A flapper onboard ship (1929) Flappers were a "new breed" of young Western women in the 1920s who wore short skirts, bobbed their hair, listened to jazz, and flaunted their disdain for what was then considered acceptable behavior. Flappers were seen as brash for wearing excessive makeup, drinking, treating sex in a casual manner, smoking, driving automobiles, and otherwise flouting social and sexual norms.[1] Flappers had their origins in the liberal period of the Roaring Twenties, the social, political turbulence and increased transatlantic cultural exchange that followed the end of World War I, as well as the export of American jazz culture to Europe. Etymology[edit] The slang word flapper, describing a young woman, is sometimes supposed to refer to a young bird flapping its wings while learning to fly.

A bridge to the quantum world: Dirac electrons found in unique material In a discovery that helps clear a new path toward quantum computers, University of Michigan physicists have found elusive Dirac electrons in a superconducting material. Quantum computers use atoms themselves to perform processing and memory tasks. They promise dramatic increases in computing power because of their ability to carry out scores of calculations at once. They could factor numbers dramatically faster than conventional computers, and would be game-changers for computer security.

Quantum information science Quantum information science is an area of study based on the idea that information science depends on quantum effects in physics. It includes theoretical issues in computational models as well as more experimental topics in quantum physics including what can and cannot be done with quantum information. The term quantum information theory is sometimes used, but it fails to encompass experimental research in the area. Subfields include: Jazz Age The Jazz Age was a feature of the 1920s (ending with The Great Depression) when jazz music and dance became popular. This occurred particularly in the United States, but also in Britain, France and elsewhere. Jazz played a significant part in wider cultural changes during the period, and its influence on pop culture continued long afterwards.

Information teleportation goes large-scale Quantum teleportation of information between quantum objects, like photons, is so well-understood that it’s almost routine. Now, an international physicists is claiming to have carried out the same trick in the macro universe. If the experiment can be replicated, it will be an impressive trick. The scientists, led by Jian-Wei Pen of the University of Science and Technology in Hefei in China, say they’ve teleported quantum state information between ensembles of 100 million rubidium atoms. With a radius of 1 mm across, that’s large enough to be seen with the naked eye. Quantum pseudo-telepathy Quantum pseudo-telepathy is a phenomenon in quantum game theory resulting in anomalously high success rates in coordination games between separated players. These high success rates would require communication between the players in a purely classical (non-quantum) world; however, the game is set up such that during the game, communication is physically impossible. This means that for quantum pseudo-telepathy to occur, prior to the game the participants need to share a physical system in an entangled quantum state, and during the game have to execute measurements on this entangled state as part of their game strategy. Games in which the application of such a quantum strategy leads to pseudo-telepathy are also referred to as quantum non-locality games.

Mental breakdown Definition[edit] The terms "nervous breakdown" and "mental breakdown" have not been formally defined through a medical diagnostic system such as the DSM-IV or ICD-10, and are nearly absent from current scientific literature regarding mental illness.[1][2] Although "nervous breakdown" does not necessarily have a rigorous or static definition, surveys of laypersons suggest that the term refers to a specific acute time-limited reactive disorder, involving symptoms such as anxiety or depression, usually precipitated by external stressors.[1] Specific cases are sometimes described as a "breakdown" only after a person becomes unable to function in day-to-day life.[3] Controversy[edit] In How Everyone Became Depressed: The Rise and Fall of the Nervous Breakdown (2013), Edward Shorter, a professor of psychiatry and the history of medicine, argues for a return to the old fashioned concept of nervous illness:

Quantum networks may be more realistic than we thought The quantum Internet is a term that has been bandied about a lot recently. And, for the moment it is utter nonsense. The Internet connects computers, so the quantum Internet pre-supposes the existence of useful quantum computers. Quantum game theory Quantum game theory is an extension of classical game theory to the quantum domain. It differs from classical game theory in three primary ways: Superposed initial states,Quantum entanglement of initial states,Superposition of strategies to be used on the initial states. This theory is based on the physics of information much like quantum computing. Superposed initial states[edit] Entangled initial states[edit]