Quantum computing firm D-Wave has announced it has calibrated a 1,200 qubit Advantage2 (Adv2) prototype, doubling the number of qubits and couplers included in the previous version of the prototype.

The new Adv2 prototype features more than 1,200 qubits and 10,000 couplers and demonstrates a 20x faster time-to-solution on hard optimization problems.

D-Wave said it has also increased qubit connectivity from 15 to 20-way; scaled energy usage by for than 40 percent; and doubled qubit coherence time.

The prototype will soon be available in the company’s Leap quantum cloud service.

D-Wave said the new Advantage2 prototype is also 20 times faster at solving spin glasses, with research carried out by the company showing that the Adv2 prototype grows quantum correlations twice as fast in materials simulation when compared to the Advantage system. Error reductions in quantum simulation tasks were also seen in the Adv2 in addition to improved performance on constraint satisfaction problems.

Overall, D-Wave said that the Advantage2 prototype beat the Advantage system 90 percent of the time.

“The new Advantage2 prototype represents a giant step up in performance,” said Mark W. Johnson, senior vice president of quantum technologies and systems products at D-Wave. “With the new lower-noise fabrication stack, we’re seeing significant gains in coherence, connectivity, and energy scale, which will translate to higher-quality and faster solutions.”

Johnson added: “This 1,200+ qubit prototype gives us great confidence that the full Advantage2 system will be our most performant system yet and unlock substantial computational power and problem-solving capabilities for our customers.”

D-Wave, which offers quantum machines that utilize quantum annealing, went public in August 2022 after a SPAC merger with DPCM Capital.

In October, D-Wave faced a second potential delisting from the New York Stock Exchange (NYSE) over its low stock price. The company was given six months to bring its share price back above a $1 average closing share price over a 30-day period.

D-Wave’s stock price sits at $0.81 at the time of publishing.