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­NSW Has Found a Way to Access Information Stored Within Atoms

By ZDNet

November 28, 2018

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Researchers at the University of New South Wales (UNSW) in Australia have demonstrated a compact sensor for accessing information stored in the electrons of individual atoms.

The team thinks quantum bits (qubits) built from electrons hosted on single atoms in semiconductors hold promise as a large-scale quantum computing platform; the approach involves generating qubits by precisely positioning and encapsulating individual phosphorus atoms within a silicon chip.

This was complicated by the need to add in the various connections and gates required to scale up the atomic architecture.

Integrating a read-out sensor into a control gate halved the minimum requirement for four gates for each qubit.

Said UNSW's Prasanna Pakkiam, "By integrating a superconducting circuit attached to the gate, we now have the sensitivity to determine the quantum state of the qubit by measuring whether an electron moves between two neighboring atoms."

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