Equal1, a global leader in silicon powered quantum computing, has today announced a major breakthrough for the quantum computing industry, demonstrating both world-leading performance for a silicon qubit array and the most complex quantum controller chip developed to date.

Breakthrough qubit silicon chip metrics

World leading metrics for a silicon qubit array:

• Single qubit gate with fidelity of 99.4% and gate speed of 84ns
• Two-qubit gate with fidelity of 98.4% and gate speed of 72ns

These results were achieved on a 6-qubit array fabricated on a silicon germanium (SiGe) CMOS compatible process.

Elena Blokhina, Equal1's Chief Scientific Officer: "Today marks a critical inflection point for Equal1 and the quantum computing industry. Equal1 has always believed that silicon is the vehicle to scale quantum computers and today, with these world leading qubit and control chip results, we have taken a major step towards this vision."

Nodar Samkharadze, Equal1's Chief Quantum Architect: "This result demonstrates the massive benefit of silicon qubits – the ability to achieve the performance required for scaling in two key areas – fidelity and speed of quantum gates."

New era of advanced control electronics at cryogenic temperatures

Equal1 also announced the world's first multi-tile Quantum Controller Chip demonstrated in Equal1's UnityQ Quantum-System-on-Chip platform. The chip operates at a remarkable 300 millikelvin and is powered by Arm Cortex cores, enabling scaling to millions of orchestrated qubits on a single chip.

Brendan Barry, Equal1's Chief Technology Officer: "Equal1 is on a mission to deliver scalable Quantum computing using commercial silicon CMOS, and our partnership with ARM is testament to that approach."

Dirk Leipold, Equal1's President and Chief Physicist: "The vision for Equal1 has been decades in the making. I am very proud of what we have accomplished over the past six years, and I am excited about what the future holds as we launch the era of scalable quantum computing."

More detail on these results is available in the technical paper on ArXiv.