D-Wave quantum computer Gate model promised by 2024 • The Register


D-Wave calls quantum computers “solvers”. And as with today’s PCs, these solvers are going to be segmented into faster, faster, and faster.

The Canadian company already has a relatively fast quantum computing device and will build a faster quantum computer capable of handling more complex issues. This superconducting system is designed to use the gate model which is also the technology behind quantum computers made by IBM and Google.

Over the past decade, D-Wave has sold quantum annealing systems, which can be used to solve small problems. Gate-type computers, like the one now promised by D-Wave, have been shown to be theoretically better for more substantial work, the manufacturer’s executives said at their Qubits talk, which was broadcast live.

“This is not an overnight exercise,” said Mark Johnson, vice president of quantum technologies and systems at D-Wave. “We’re not trying to fool anyone here. There are a lot of needs. We think some of these technologies… are going to take time.”

D-Wave plans to make this door model computer available by 2023 or 2024.

“Our goal over the next few years is to get a small error corrected [gate-model] system at Leap, ”Johnson added, referring to its cloud-based quantum computer service. This part of error correction is important because it is necessary to deal with finicky qubits.

In quantum computers, information is encoded in quantum bits, or qubits, with values ​​of 0, 1, or superimposition of both. This property allows quantum computers to quickly solve big problems that would be infeasible for conventional computers.

Data at the door

The design of the Model Door Computer targeted by D-Wave is seen by many as a direct path to a universal quantum computer.

The gate model system is more complex to build than the company’s current quantum annealing technology, which has limited scope and aims to solve specific problems. The annealing system provides a set of possible results after applying a magnetic field to perform qubit operations.

“We know there are some important issues annealing systems can’t solve, like differential equations,” Alan Barantz, CEO of D-Wave, said during a speech. He pointed to fluid dynamics and quantum chemistry as other examples, and added “they require the gate model.”

Barantz said the quantum gate model computer and D-Wave annealing systems will coexist, serving two separate purposes. In pharmaceuticals, drug discovery will require the massive computing power of the gate model, while the drug’s passage through the approval process is more about optimization, which is better suited to annealing, said. Barantz.

This gate-type computer will pit D-Wave against IBM, which in the past published [PDF] an academic paper claiming that D-Wave’s quantum annealing system was not true quantum computing.

D-Wave’s next system will be based on flux qubits, which are already used in the annealing system. Big Blue and Google are based on transmon qubits. The process of building the error-correcting system also involves fabricating multi-layered qubits and on-chip addressing for I / O management.

The company also announced a 7,000-qubit quantum annealing system, an upgrade from the 5,000-qubit computer announced last year. This new device has a revised qubit build design and stack, Barantz said. ®

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