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Laying the Foundations for a ''Quantum Computer'' |
| Section: NATURAL SCIENCE / CRUCIBLES OF SCIENCE |
| Author: Max Planck Society (original work by Stefan Nubmann, Karim Murr, Markus Hijkema, Bernhard Weber, Axel Kuhn, and Gerhard Rempe) |
| Publication: The world & I online |
| Issue Date: 2/1/2006 |
| Size: 1,021 Words, 6,225 Characters |
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Complex computing operations could be greatly accelerated through massive parallel processing in a quantum computer. The smallest units of information are known as quantum bits, which could be realized using atoms or molecules, if one can manipulate their position, quantum state, and interactions with other particles. Controlling single atoms in an optical resonator is now one decisive step closer to becoming reality for the research team led by Professor Gerhard Rempe of the Max Planck Institute of Quantum Optics in Garching, near Munich, Germany. The scientists reported in the journal Nature Physics that they were able to cool single rubidium atoms in every direction of motion using a sophisticated array of lasers in an optical resonator, and keep them there on aver...
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... coupling, and teleportation of quantum states between very distant atoms with the help of photons. In this way, the researchers have taken a tangible step toward creating a distributed quantum computer made of a number of strongly coupled atom resonator systems. The trapped atoms store the quantum bits, while the photons they emit carry out the computing operations.
© 2005 Max Planck Society
(778 of 6,225 characters)
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