Precision atom qubits achieve major quantum computing milestone

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Precision atom qubits achieve major quantum computing milestone


  Last updated April 27, 2018 at 11:55 am


The race is on to build the first reproducable two qubit gate in silicon – the building block for a scalable silicon-based quantum computer.

UNSW Sydney-led scientists have shown for the first time that they can make two precisely placed phosphorous atom qubits “talk” to each other.

Combined with their world-best achievements for a spin qubit lifetime, and for low electrical noise quantum circuitry, the team is uniquely poised to build a reproducable two qubit gate.

The team – led by UNSW Scientia Professor Michelle Simmons, Director of the Centre of Excellence for Quantum Computation and Communication Technology, or CQC2T – is the only group in the world that has the ability to see the exact position of their qubits in the solid state.

Simmons’ team create the atom qubits by precisely positioning and encapsulating individual phosphorus atoms within a silicon chip. Information is stored on the quantum spin of a single phosphorus electron.

Read more about the research here.

Related: World’s first complete design of a silicon quantum computer chip

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