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Scientists hatch quantum-computer building blocks

The US National Institute of Standards and Technology (NIST) has successfully paired the first ion traps, creating the building blocks for quantum computing.

Unlike current transistor-based computing architectures, the NIST's quantum computing architecture uses ions - electrically charged atoms - held in electromagnetic traps and interacting with one another to create computational signalling, according to the NIST.

Whereas transistors can only register their function in the "on" or "off" state, represented by the binary language of ones and zeros, atoms within a quantum computer can work in several different states simultaneously, allowing such an architecture to potentially process an exponentially higher amount of data than a transistor-based computer, according to the NIST.

The NIST has successfully paired two ion traps, separated by a mere 1.2mm, at the organisation's labs in Colarado, USA. The NIST reports that the experimental ion traps have remained stable, suggesting that a larger quantum computer could be built upon such an architecture.

"However, manipulating a large number of ions in a single trap presents immense technical difficulties and scaling arguments suggest that this scheme is limited to computations on tens of ions," a statement issued by the NIST said.

No indication was given as to when possible commercial applications of quantum computing might emerge.

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