NEC claims breakthrough on quantum computer

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NEC claims breakthrough on quantum computer

An SI Board Since April 1999

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Emcee: BillCh	Type: Unmoderated

Introduction Compact

Japanese company NEC, together with other researchers, claimed today they have made a
breakthrough on the supercomputing front.

According to NEC, the consortium has developed the fundamental building block for a
future quantum computer by controlling the superposition of quantum states in a solid state
electron device.

The quantum states are used to represent data as a quantum bit or qubit, with similar
characteristics to the binaries used by current machines.

And NEC claims that when a machine is built using the breakthrough, it will allow
computation to be thousands or millions of times more powerful than current
supercomputers.

NEC boffins made the solid state qubit by creating a so-called Cooper pair box by
connecting a super conducting electrode some billionths of a meter with a reservoir of
electrons using a Josephson Junction2.

Quantum superposition states allowed the wave-like quanta to tunnel through the junction.
In the device, two quantum states with a different number of electrons are coupled into
superposition. ®

Go to reply# or date (mm/dd/yy):

Reply	Message Preview	From	Recs	Posted
2	Lost the link to this: (Note the date this was written) Computing: The Next G	wily	-	4/29/1999
1	Could you provide a link for that article? How does that technology compare to	wily	-	4/29/1999

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