Intel, QuTech notch milestone in cryo-electronics

Share This Post

Intel Corporation on Wednesday announced that along with QuTech – a collaboration between Delft University of Technology and the Netherlands Organisation for Applied Scientific Research – it had resolved a major constraint towards a working large-scale quantum computer. This research has been published in the science journal, Nature.

“These results open up the way towards a fully integrated, scalable silicon-based quantum computer,” noted the abstract of the paper published in Nature.

An “interconnect bottleneck” exists between quantum chips that sit in cryogenic dilution refrigerators and the complex room-temperature electronics that control the qubits. Any serious practical use of quantum computing will involve quantum processors which host millions of qubits.

The complexity of wiring such a system remains a basic challenge towards large-scale quantum computation and practical applications.

“Advanced lithography supports the fabrication of both control electronics and qubits in silicon using technology compatible with complementary metal oxide semiconductors,” pointed out the paper.

Together QuTech and Intel have designed and fabricated an integrated circuit that can operate at extremely low temperatures when controlling qubits.

The authors reported a cryogenic complementary metal oxide semiconductors (CMOS) “control chip operating at 3 kelvin, which outputs tailored microwave bursts to drive silicon quantum bits cooled to 20 millikelvin.”

The peer-reviewed research claims:

  • The cryogenic control chip was first benchmarked. An electrical performance consistent with qubit operations of 99.99 per cent fidelity, assuming ideal qubits, was found
  • Next, the control chip was used to coherently control actual qubits encoded in the spin of single electrons confined in silicon quantum dots. It was found that the chip achieves the same fidelity as commercial instruments at room temperature
  • A two-qubit quantum processor was used to demonstrate the capabilities of the control chip by programming numerous benchmarking protocols and the Deutsch–Jozsa algorithm on it

A major outcome of this research would be the ability to integrate the cryogenic control chip and qubits on the same die. And that would truly be a quantum jump towards scaling.

Related Posts

Boston startup QuEra takes novel route to quantum hardware

Founded by Physics professors, Boston-based QuEra Computing uses atomic qubits to build a stable and scalable quantum processor.

US blackballs Chinese quantum computing firms and chip makers for trade

Three Chinese quantum computing firms and a handful of chipmakers have been put on a trade blacklist by the US government to curb export of US technology.

Project Q-Exa pursues a European quantum computer made in Germany

Germany is at the centre of European quantum plans with the Q-Exa project

Australia to pump $73 million in cutting edge technology including quantum

At the centre of geopolitical jostling in the Indo-Pacific, Australia plans to beef up its technological edge in nine critical areas including quantum computing.

IBM’s Eagle soars with an over 100-qubit quantum processor

The American technology major has achieved an intermediate milestone in its predetermined journey towards building a 1,000-qubit plus quantum computer within two years.

Silicon Valley’s QC Ware mops up $25 million in Series B

QC Ware attracts both strategic and financial investors in its latest funding round.