Communications of the ACM
Quantum Race Accelerates Development of Silicon Quantum Chip
Delft University of Technology researchers have shown that the quantum information of an electron spin can be transported to a photon in a silicon quantum chip.
Credit: Delft University of Technology
Researchers at the Delft University of Technology (TU Delft) in the Netherlands have demonstrated that the quantum information of an electron spin can be transported to a photon in a silicon quantum chip.
TU Delft professor Lieven Vandersypen says this represents a milestone for linking quantum bits (qubits) across the chip and enabling the scaling-up to large numbers of qubits.
With silicon, "we can use electrical fields to capture single electrons in silicon for use as [qubits]," notes TU Delft's Guoji Zheng.
The team has shown that a single electron spin and a single photon can be paired on a silicon chip, although TU Delft's Nodar Samkharadze says the electrons that are captured as qubits in silicon currently can only make direct contact with their immediate neighbors.
"My team achieved this result in a relatively short time and under great pressure from worldwide competition," Vandersypen notes.
From Delft University of Technology
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