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| University of Vienna |
Vienna. The international research team around Frank Verstraete, quantum physicist at the University of Vienna, presented in the current issue of the journal "Nature" a novel quantum algorithms. Used by a future quantum computer would have enormous potential this method, new insights into fundamental relationships of chemistry, material physics and high energy physics grant. Simulations of high-performance computers can not solve all problems. Since the development of the computer in the 1950s, scientists working on a systematic approach, complex systems to simulate how they occur in nature. Currently, many researchers try using super computers, the quantum-mechanical many-body Schrodinger equation to solve, for example, to develop new drugs or superconducting materials. Here comes the fundamental Problem, that occur in the quantum simulation using classical computers not only likely but also probability amplitudes, which can be negative - what is called "sign problem" or "sign problem".
quantum computer to solve a "wonderful problem"? Already
Richard Feynman - one of the first visionaries of the quantum computer - recommended by these complex computing works by classical methods depart: Since "nature - damn it - was not a classic, one had to just simulate quantum mechanically." (International Journal of Theoretical Physics 21, 1982). Feynman himself Moreover, this problem was "wonderful" because it is not easy to solve. Thirty years later, there are first scientific achievements, to realize the quantum computer. An international team of theoretical physicists from Austria, Germany, Canada and Australia, led by Frank Verstraete, a professor at the University of Vienna, such as the "sign problem" using a quantum algorithm using a quantum computer could be solved.
many-body systems could be simulated with a quantum computer
With a current in the output of the prestigious journal Nature presented quantum algorithm, the quantum Metropolis Sampling, "could so-called" static many-body systems "can be simulated with a quantum computer. This itself can tasks with the highest degree of complexity to be solved exponentially faster.
This is the consequence not only for quantum physics of the highest interest.
insights in many research fields by simulation at the quantum computer
fields such as chemistry, high-energy physics can also use the materials physics of quantum simulations of static many-body systems benefit enormously. The simulation of many-body Schrodinger equation so far is a "bottleneck", where areas of research already long sought theory of quantum physics solutions for this problem - with the quantum Metropolis sampling "is now shown that this equation can be solved with a quantum computer. The quantum computer has the potential, therefore, the leading technology of the 21st Century to be. His first simulations are already waiting for him.
Source: idw
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