New IDC Spotlight Paper: Gaining Near Term Advantage Using Quantum Annealing   Get the Paper

September 13, 2023

D-Wave Demonstrates State-of-the-Art Coherence Results with Fluxonium Qubits

Fabrication of two-dimensional single fluxonium test circuits show coherence performance among best known results for superconducting qubits

PALO ALTO, Calif., BURNABY, B.C., --- September 13, 2023 -- D-Wave Quantum Inc. (NYSE: QBTS), a leader in quantum computing systems, software, and services and the world’s first commercial supplier of quantum computers, today announced notable progress in its development of high coherence qubits, with results expected to have a significant impact on its future quantum technologies. D-Wave has designed, manufactured, and operated fluxonium qubits that have demonstrated quantum properties that are comparable to the best seen to date in scientific literature.

The fluxonium qubit, pioneered by Michel Devoret and his colleagues at Yale University in 2009, has recently become an attractive candidate for use in next-generation gate model quantum computing architectures. Given the growing industry interest and D-Wave’s expertise in building flux-like qubit quantum technologies, the company explored the use of fluxonium in its own technology development efforts. D-Wave has manufactured and tested fluxonium qubits in a 2-dimensional circuit geometry. The measured coherence properties, with relaxation times in excess of 100 microseconds, are comparable to the current state-of-the-art for such qubits. In addition, the measured effective temperature of its fluxonium, 18 millikelvin, is among the best that has been reported in the scientific literature to date for superconducting qubits.

“These results show that fluxonium is a viable candidate qubit for D-Wave’s gate model quantum computing architectures. Moreover, in doing this work we have learned that fluxonium can address some of the known shortcomings of competing superconducting gate model qubits,” said Mark Johnson, SVP of quantum technologies and systems products at D-Wave. “We believe this will have a significant impact on D-Wave’s hardware development and reinforces our technical leadership by demonstrating that we can design, manufacture, and operate high-coherence fluxonium qubits that are comparable to the best in the world.”

To learn more about the high coherence fluxonium test circuits and their measurements, the technical report is available here.

About D-Wave Quantum Inc.

D-Wave is a leader in the development and delivery of quantum computing systems, software, and services, and is the world’s first commercial supplier of quantum computers—and the only company building both annealing quantum computers and gate-model quantum computers. Our mission is to unlock the power of quantum computing today to benefit business and society. We do this by delivering customer value with practical quantum applications for problems as diverse as logistics, artificial intelligence, materials sciences, drug discovery, scheduling, cybersecurity, fault detection, and financial modeling. D-Wave’s customers include Volkswagen, Mastercard, Deloitte, Davidson Technologies, ArcelorMittal, Siemens Healthineers, Unisys, NEC Corporation, Pattison Food Group Ltd., DENSO, Lockheed Martin, Forschungszentrum Jülich, University of Southern California, and Los Alamos National Laboratory.

Forward-Looking Statements

Certain statements in this press release are forward-looking, as defined in the Private Securities Litigation Reform Act of 1995. These statements involve risks, uncertainties, and other factors that may cause actual results to differ materially from the information expressed or implied by these forward-looking statements and may not be indicative of future results. Forward-looking statements in this press release include, but are not limited to, statements regarding the potential impact of D-Wave’s development of fluxonium qubits on its future technologies, including on hardware development and gate model efforts, and the viability of fluxonium qubits for use in gate model quantum computing architectures. These forward-looking statements are subject to a number of risks and uncertainties, including, among others, various factors beyond management’s control, including the risk that fluxonium qubits may not be viable for use in our hardware, including in gate model quantum computing architectures;  general economic conditions and other risks; our ability to expand our customer base and the customer adoption of our solutions; risks within D-Wave’s industry, including anticipated trends, growth rates, and challenges for companies engaged in the business of quantum computing and the markets in which they operate; the outcome of any legal proceedings that may be instituted against us; risks related to the performance of our business and the timing of expected business or financial milestones; unanticipated technological or project development challenges, including with respect to the cost and/or timing thereof; the performance of our products; the effects of competition on our business; the risk that we will need to raise additional capital to execute our business plan, which may not be available on acceptable terms or at all; the risk that we may never achieve or sustain profitability; the risk that we are unable to secure or protect our intellectual property; volatility in the price of our securities; the risk that our securities will not maintain the listing on the NYSE; and the numerous other factors set forth in D-Wave’s Annual Report on Form 10-K for its fiscal year ended December 31, 2022 and other filings with the Securities and Exchange Commission. Undue reliance should not be placed on the forward-looking statements in this press release in making an investment decision, which are based on information available to us on the date hereof. We undertake no duty to update this information unless required by law.

Media Contact:


Alex Daigle