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David Deutsch
David Elieser Deutsch ( ; born 18 May 1953) is a British physicist at the University of Oxford. He is a Visiting Professor in the Department of Atomic and Laser Physics at the Centre for Quantum Computation (CQC) in the Clarendon Laboratory of the University of Oxford. He pioneered the field of quantum computation by formulating a description for a quantum Turing machine, as well as specifying an algorithm designed to run on a quantum computer. He has also proposed the use of entangled states and Bell's theorem for quantum key distribution and is a proponent of the many-worlds interpretation of quantum mechanics. Early life and education Deutsch was born into a Jewish family in Haifa, Israel on 18 May 1953, the son of Oskar and Tikva Deutsch. In London, David attended Geneva House school in Cricklewood (his parents owned and ran the Alma restaurant on Cricklewood Broadway), followed by William Ellis School in Highgate (then a voluntary aided school in north London) before readin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haifa
Haifa ( he, חֵיפָה ' ; ar, حَيْفَا ') is the third-largest city in Israel—after Jerusalem and Tel Aviv—with a population of in . The city of Haifa forms part of the Haifa metropolitan area, the third-most populous metropolitan area in Israel. It is home to the Baháʼí Faith's Baháʼí World Centre, and is a UNESCO World Heritage Site and a destination for Baháʼí pilgrimage. Built on the slopes of Mount Carmel, the settlement has a history spanning more than 3,000 years. The earliest known settlement in the vicinity was Tell Abu Hawam, a small port city established in the Late Bronze Age (14th century BCE). Encyclopedia Judaica, ''Haifa'', Keter Publishing, Jerusalem, 1972, vol. 7, pp. 1134–1139 In the 3rd century CE, Haifa was known as a dye-making center. Over the millennia, the Haifa area has changed hands: being conquered and ruled by the Canaanites, Israelites, Phoenicians, Assyrians, Babylonians, Persians, Hasmoneans, Romans, Byzantines, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Error Correction
Quantum error correction (QEC) is used in quantum computing to protect quantum information from errors due to decoherence and other quantum noise. Quantum error correction is theorised as essential to achieve fault tolerant quantum computing that can reduce the effects of noise on stored quantum information, faulty quantum gates, faulty quantum preparation, and faulty measurements. Classical error correction employs redundancy. The simplest albeit inefficient approach is the repetition code. The idea is to store the information multiple times, and—if these copies are later found to disagree—take a majority vote; e.g. suppose we copy a bit in the one state three times. Suppose further that a noisy error corrupts the three-bit state so that one of the copied bits is equal to zero but the other two are equal to one. Assuming that noisy errors are independent and occur with some sufficiently low probability ''p'', it is most likely that the error is a single-bit error and the tran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centre For Quantum Computation
The Centre for Quantum Computation (CQC) is an alliance of quantum information research groups at the University of Oxford. It was founded by Artur Ekert in 1998. Until recently, the CQC also included research groups at the University of Cambridge, but now the Cambridge groups operate as an independent entity called the Cambridge Centre for Quantum Information and Foundations (CQIF). Research The CQC conducts theoretical and experimental research into quantum computing, quantum cryptography and other forms of quantum information processing, into the implications of the quantum theory of information for physics itself, and into foundational and conceptual questions in quantum theory and quantum information theory. Groups Initially the CQC was based at the Clarendon Laboratory, but it has now grown to span several departments at the University of Oxford: Physics * Atom-photon physics, group led by Axel Kuhn. * Ion trapping, group led by Andrew Steane and David Lucas. * Nuclear m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physicist
A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate causes of phenomena, and usually frame their understanding in mathematical terms. Physicists work across a wide range of research fields, spanning all length scales: from sub-atomic and particle physics, through biological physics, to cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: experimental physicists who specialize in the observation of natural phenomena and the development and analysis of experiments, and theoretical physicists who specialize in mathematical modeling of physical systems to rationalize, explain and predict natural phenomena. Physicists can apply their knowledge towards solving practical problems or to developing new technologies (also known as applie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dirac Medal
The Dirac Medal is the name of four awards in the field of theoretical physics, computational chemistry, and mathematics, awarded by different organizations, named in honour of Professor Paul Dirac, one of the great theoretical physicists of the 20th century. The Dirac Medal and Lecture (University of New South Wales) The first-established prize is the Dirac Medal for the Advancement of Theoretical Physics, awarded by the University of New South Wales, Sydney, Australia, jointly with the Australian Institute of Physics on the occasion of the public Dirac Lecture. The Lecture and the Medal commemorate the visit to the university in 1975 of Professor Dirac, who gave five lectures there. These lectures were subsequently published as a book: ''Directions of Physics'' (Wiley, 1978 – H. Hora and J. Shepanski, eds.). Professor Dirac donated the royalties from this book to the University for the establishment of the Dirac Lecture series. The prize, first awarded in 1979, includes a sil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dirac Prize
Distributed Research using Advanced Computing (DiRAC) is an integrated supercomputing facility used for research in particle physics, astronomy and cosmology in the United Kingdom. DiRAC makes use of multi-core processors and provides a variety of computer architectures for use by the research community. DiRAC and DiRAC II Initially DiRAC was funded with an investment of £12 million from the Government of the United Kingdom's Large Facilities Capital Fund combined with funds from the Science and Technology Facilities Council (STFC) and a consortium of universities in the UK. In 2012, the DiRAC facility was upgraded with a further £15 million of UK government capital to create DiRAC II which has five installations: # University of Cambridge HPC Service with 10000 cores and 1 Petabyte clustered file system # Cambridge Cosmos shared memory Service with 1856 cores, 14 Terabytes of globally shared memory with Intel Xeon Phi coprocessors # University of Leicester IT Services with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Godwin
William Godwin (3 March 1756 – 7 April 1836) was an English journalist, political philosopher and novelist. He is considered one of the first exponents of utilitarianism and the first modern proponent of anarchism. Godwin is most famous for two books that he published within the space of a year: '' An Enquiry Concerning Political Justice'', an attack on political institutions, and ''Things as They Are; or, The Adventures of Caleb Williams'', an early mystery novel which attacks aristocratic privilege. Based on the success of both, Godwin featured prominently in the radical circles of London in the 1790s. He wrote prolifically in the genres of novels, history and demography throughout his life. In the conservative reaction to British radicalism, Godwin was attacked, in part because of his marriage to the feminist writer Mary Wollstonecraft in 1797 and his candid biography of her after her death from childbirth. Their daughter, later known as Mary Shelley, would go on to wri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacob Bronowski
Jacob Bronowski (18 January 1908 – 22 August 1974) was a Polish-British mathematician and philosopher. He was known to friends and professional colleagues alike by the nickname Bruno. He is best known for developing a humanistic approach to science, and as the presenter and writer of the thirteen-part 1973 BBC television documentary series, and accompanying book ''The Ascent of Man'', which led to his regard as "one of the world's most celebrated intellectuals". Bronowski's family moved from Congress Poland to Germany and then to England while he was a child. He won a scholarship to study mathematics at the University of Cambridge. His interests have been described as ranging "widely, from biology to poetry and from chess to Humanism". He taught mathematics at the University College Hull between 1934 and 1942. During World War II he led the field of operations research and worked to increase the effectiveness of Allied bombing. After the war he headed the projects division of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Popper
Sir Karl Raimund Popper (28 July 1902 – 17 September 1994) was an Austrian-British philosopher, academic and social commentator. One of the 20th century's most influential philosophers of science, Popper is known for his rejection of the classical inductivist views on the scientific method in favour of empirical falsification. According to Popper, a theory in the empirical sciences can never be proven, but it can be falsified, meaning that it can (and should) be scrutinised with decisive experiments. Popper was opposed to the classical justificationist account of knowledge, which he replaced with critical rationalism, namely "the first non-justificational philosophy of criticism in the history of philosophy". In political discourse, he is known for his vigorous defence of liberal democracy and the principles of social criticism that he believed made a flourishing open society possible. His political philosophy embraced ideas from major democratic political ideologies, inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Beginning Of Infinity
''The Beginning of Infinity: Explanations that Transform the World'' is a popular science book by the physicist David Deutsch first published in 2011. Synopsis Deutsch views the Enlightenment of the 18th century as near the beginning of an infinite sequence of purposeful knowledge creation. Knowledge here consists of information with good explanatory function that has proven resistant to falsification. Any real process is physically possible to perform provided the knowledge to do so has been acquired. The Enlightenment set up the conditions for knowledge creation which disrupted the static societies that previously existed. These conditions are the valuing of creativity and the free and open debate that exposed ideas to criticism to reveal those good explanatory ideas that naturally resist being falsified due to their having basis in reality. Deutsch points to previous moments in history, such as Renaissance Florence and Plato's Academy in Golden Age Athens, where this process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Fabric Of Reality
''The Fabric of Reality'' is a 1997 book by physicist David Deutsch. His follow-up book, ''The Beginning of Infinity'', was published in 2011. Overview The book expands on his views of quantum mechanics and its implications for understanding reality. This interpretation, which he calls the '' multiverse'' hypothesis, is one of a four-strand Theory of Everything (TOE). The four strands #Hugh Everett's many-worlds interpretation of quantum physics, "The first and most important of the four strands". # Karl Popper's epistemology, especially its anti-inductivism and its requiring a realist (non-instrumental) interpretation of scientific theories, and its emphasis on taking seriously those bold conjectures that resist being falsified. #Alan Turing's theory of computation, especially as developed in Deutsch's "Turing principle", where Turing's Universal Turing machine is replaced by Deutsch's universal quantum computer. ("''The'' theory of computation is now the quantum theory of co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Mechanics Of Time Travel
Until recently, most studies on time travel are based upon classical general relativity. Coming up with a quantum version of time travel requires physicists to figure out the time evolution equations for density states in the presence of closed timelike curves (CTC). Novikov had conjectured that once quantum mechanics is taken into account, self-consistent solutions always exist for all time machine configurations, and initial conditions. However, it has been noted such solutions are not unique in general, in violation of determinism, unitarity and linearity. The application of self-consistency to quantum mechanical time machines has taken two main routes. Novikov's rule applied to the density matrix itself gives the Deutsch prescription. Applied instead to the state vector, the same rule gives nonunitary physics with a dual description in terms of post-selection. Deutsch's prescription In 1991, David Deutsch came up with a proposal for the time evolution equations, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
