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Published November 16, 2009 Whether two quantum states can be distinguished over time provides a test to characterize noise from the environment. |
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Published October 19, 2009 A quantum algorithm that uses the solution to a set of linear equations provides an exponential speedup by comparison with classical alternatives. |
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Published June 22, 2009 The demonstration of all-optical spin-echo measurements may provide a route toward decoupling spins from noise sources. |
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Published June 8, 2009 A system familiar in condensed matter—particles on a hexagonal lattice—could be a useful initial state for a one-way quantum computer. |
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Published February 2, 2009 A rigorous estimate shows that an error correction code for a scalable quantum computer can accommodate error at the 0.1% level—about ten times more tolerant than most other methods. |
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Published August 25, 2008 Squeezed states can enhance the sensitivity of a detector and the storage capability of quantum memory devices. Because these features improve with an increase in system size, researchers are exploring ways to produce squeezed states in large ensembles of atoms. |
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Published July 28, 2008 Quantum Information Spintronics Spin decoherence is a fundamental obstacle in quantum computation and spintronics. Scientists show they can increase the lifetime of a localized spin in a diamond lattice up to 100 times by polarizing the surrounding spins on the lattice. |
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