Communications of the ACM
Key Element for a Scalable Quantum Computer
The researchers succeeded in transferring electrons, the carriers of quantum information, across several micrometers on the quantum chip.
Credit: Sascha Kreklau/Forschungszentrum Jülich
Physicists at German national research institution Forschungszentrum Jülich (FZJ) and Germany’s RWTH Aachen University have taken a step toward realizing a scalable quantum computer by transferring electrons across several micrometers on a quantum chip.
The researchers' goal is to combine elements of control electronics directly on the chip.
Their solution, effectively a “quantum bus,” was able to transport an electron 5,000 times over a distance of 560 nanometers (2.8 millimeters) without major errors.
The electrons were driven by simple control signals, which do not grow more complex over longer distances.
Said FZJ’s Lars Schreiber, "We generate a potential wave on which the electrons simply surf over various sources of interference."
From Forschungszentrum Jülich (Germany)
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