Two projects launched to connect error-corrected qubits

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Jonathan Home and Andreas Wallraff are attempting to entangle two logical qubits
Jonathan Home and Andreas Wallraff are attempting to entangle two logical qubits and transferring the quantum state of one logical qubit to the other. (Photo: KellenbergerKaminski Photographie / ETH-Rat)

ETH Zurich is participating in two quantum computing projects that are being financed by IARPA, the US research funding agency, with up to 40 million dollars. Both projects aim to connect two error-corrected qubits with one another and thus lay the foundation for future quantum computers.

"If we manage to connect two error-corrected qubits with one another, we’ll have laid the groundwork for future quantum computers that can then be used to tackle a broad range of tasks," Wallraff says. However, this will demand several additional steps to connect at first dozen, then hundreds and finally thousands of logical qubits.

International collaboration essential

Quantum computers are among the key technologies of the 21st century. Developing them, however, is a complex, time-consuming and costly process. This makes international collaboration essential. "IARPA’s decision to fund not one but two projects in which ETH Zurich is involved confirms our university’s leading position in this vital research area," says a delighted Christian Wolfrum, Vice President for Research at ETH Zurich. "It’s now crucial that Switzerland be an associated country in Horizon Europe as soon as possible so that our researchers can also participate in the EU’s flagship quantum programme."

Markus Gross