Monday, March 1, 2010

Quantum computer can hit a target of hydrogen.

A basic quantum computer solved a challenging job facing chemists today - to calculate the molecular energy of the principle - the principle of scientific basis.

Despite knowing the molecular energy can help to predict the reaction rate, but still the computer power needed and the complexity of the work of the main principles to encourage chemists to use estimates, which may not be accurate. Andrew White of the University of Queensland, Australia, explained that studi1 the year 2005 to calculate the full model for hydrogen and helium, but can not do much. 'They say that the lithium that can later be viewed not seem possible,' he said. 'If you take a molecule with 100 electrons, you can not even solve where to use each computer in the world at a time. "

Now, White and colleagues have created a computer that exploit the exotic behavior of quantum mechanical systems to solve some problems tersebut2. In a system, computational power increases exponentially with every extra quantum bits, or qubits, to calculate the needs memparalelkan molecular energy. White stressed that menggembirakannya how this approach to the science of chemistry is: 'In 20 years sutau where we will of course will have 10 systems with hundreds of qubits, where you can "break the bank", expanding computational power in the world,' predictions.

Quantum computer that is used by White and his colleagues to calculate molecular hydrogen energy

System of the White team berkharakteristikan only two qubits, in the form of photons created simultaneously with a laser beam shone into the crystals. They process it through a quantum logic gate is also being developed in Queensland, using a quantum algorithm pengkomputeran developed by collaborators from Harvard University in the United States to calculate the energy of molecular hydrogen. Computer is turned -535.58 ± 0.03kJmol-1 in the ground state energy of an equilibrium bond length 73.48pm, fully in accordance with the results obtained in conventional computers.

The scientists had to rely on ordinary computers to perform some parts of the algorithm, a fact that now restrict the approach to some very small molecules. They estimated that to reproduce the simulation of hydrogen in a way that can be scaled to take four qubits and gate 522 is perfect. While the computer with four qubits is very possible now, White asserted that a system with 522 gates is not possible.

Paul Sherwood, head of Science and Technology Facilities Council England, computational chemistry group calls this as 'a significant step forward'. 'While some technological challenges remain, a breakthrough in this work provides an exciting prospect which the next generation of chemical experts will have access to the quantum chemical simulations of highly accurate, free from the various estimates - estimates that the complex is needed now,' he said.

A basic quantum computer solved a challenging job facing chemists today - to calculate the molecular energy of the principle - the principle of scientific basis.

Despite knowing the molecular energy can help to predict the reaction rate, but still the computer power needed and the complexity of the work of the main principles to encourage chemists to use estimates, which may not be accurate. Andrew White of the University of Queensland, Australia, explained that studi1 the year 2005 to calculate the full model for hydrogen and helium, but can not do much. 'They say that the lithium that can later be viewed not seem possible,' he said. 'If you take a molecule with 100 electrons, you can not even solve where to use each computer in the world at a time. "

Now, White and colleagues have created a computer that exploit the exotic behavior of quantum mechanical systems to solve some problems tersebut2. In a system, computational power increases exponentially with every extra quantum bits, or qubits, to calculate the needs memparalelkan molecular energy. White stressed that menggembirakannya how this approach to the science of chemistry is: 'In 20 years sutau where we will of course will have 10 systems with hundreds of qubits, where you can "break the bank", expanding computational power in the world,' predictions.

Quantum computer that is used by White and his colleagues to calculate molecular hydrogen energy

System of the White team berkharakteristikan only two qubits, in the form of photons created simultaneously with a laser beam shone into the crystals. They process it through a quantum logic gate is also being developed in Queensland, using a quantum algorithm pengkomputeran developed by collaborators from Harvard University in the United States to calculate the energy of molecular hydrogen. Computer is turned -535.58 ± 0.03kJmol-1 in the ground state energy of an equilibrium bond length 73.48pm, fully in accordance with the results obtained in conventional computers.

The scientists had to rely on ordinary computers to perform some parts of the algorithm, a fact that now restrict the approach to some very small molecules. They estimated that to reproduce the simulation of hydrogen in a way that can be scaled to take four qubits and gate 522 is perfect. While the computer with four qubits is very possible now, White asserted that a system with 522 gates is not possible.

Paul Sherwood, head of Science and Technology Facilities Council England, computational chemistry group calls this as 'a significant step forward'. 'While some technological challenges remain, a breakthrough in this work provides an exciting prospect which the next generation of chemical experts will have access to the quantum chemical simulations of highly accurate, free from the various estimates - estimates that the complex is needed now,' he said.

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