Precision atom qubits achieve major quantum computing milestone

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.