News of the WeekQuantum Mechanics

Quantum Computing Makes Solid Progress

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Science  30 Apr 1999:
Vol. 284, Issue 5415, pp. 722-723
DOI: 10.1126/science.284.5415.722

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A team of Japanese researchers has turned a simple metal- and silicon-based device into the key component of a quantum computer. In this week's issue of Nature, these physicists describe how they created the first electrically controlled bit of quantum data, or qubit, in an electronic device that in theory could be reproduced manyfold. But others caution that making complex solid-state quantum computers is still many years away, and researchers must first learn how to keep their quantum data from decaying almost the instant they're made.