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Experts Question D-Wave's Claims of Quantum Supremacy

D-Wave's claims of quantum supremacy are challenged by researchers, raising questions about the capabilities of classical computing.

Mercation Admin
May 27, 2026 2 min read
Experts Question D-Wave's Claims of Quantum Supremacy

Researchers from the Flatiron Institute and Boston University, backed by the Simons Foundation, have cast doubt on D-Wave's assertions regarding quantum supremacy.

A study published on May 21 in Science suggests that problems previously considered unsolvable by classical computers can actually be tackled using conventional methods.

The Simons Foundation highlighted that earlier claims of quantum supremacy, including those made by D-Wave last year, are now under scrutiny. D-Wave had reported that its system could perform quantum dynamics simulations beyond classical computing capabilities, estimating that the Frontier supercomputer would need almost a million years for such tasks.

Dispute Details

The Flatiron researchers utilized tensor networks combined with a modified probability propagation algorithm, successfully replicating calculations across various lattices, with some tests conducted on a standard laptop. They concluded that many tasks, which were previously heralded as demonstrations of quantum supremacy, could still be efficiently handled by classical computing.

D-Wave countered these findings on May 26, acknowledging advancements in classical methods but asserting that the researchers only examined a limited set of scenarios and did not replicate the complete range of tasks outlined in D-Wave's original study. The company emphasized that the new research does not encompass all geometries, system sizes, interaction parameters, and measurable quantities.

This debate has broader implications, as D-Wave is set to showcase its strategy and commercial plans during its Investor Day at the NYSE on June 1. CEO Alan Baratz indicated that the industry is moving towards a phase characterized by validated results.

Financial Overview

Financially, D-Wave's situation presents a mixed picture. In the first quarter of 2026, the company reported record contracts amounting to $33.4 million, a significant increase from $1.6 million the previous year. This includes a $20 million system sale to Florida Atlantic University and a two-year, $10 million quantum computing service agreement with a Fortune 100 company.

However, the company’s quarterly revenue saw a decline from $15 million to $2.9 million, as the previous year’s figures were bolstered by a substantial one-time equipment sale. D-Wave is also looking to secure up to $100 million in funding under the CHIPS and Science Act for developing superconducting systems utilizing quantum annealing and gate architecture.

Additionally, in May, the U.S. Department of Commerce allocated $2 billion to support American companies in the quantum computing sector.

D-Wave's Quantum Supremacy Claims Questioned by Experts — Mercation