In brief
D-Wave Quantum says it has demonstrated on-chip cryogenic control of gate-model qubits, a development the company describes as an industry first. The approach is intended to reduce the wiring needed to control larger qubit systems while preserving qubit fidelity. D-Wave says the demonstration shows that control technology it developed for its commercial annealing quantum processing units can also be used in gate-model architectures. In its annealing systems, the company says multiplexed digital-to-analog converters manage tens of thousands of qubits and couplers using 200 bias wires. D-Wave says applying this control approach to gate-model systems could address wiring complexity as it develops larger-scale quantum processing units. The company builds both annealing and gate-model quantum computing technology.
Key takeaways
- D-Wave reports demonstrating on-chip cryogenic control of gate-model qubits.
- The company says the approach can reduce wiring needs without degrading qubit fidelity.
- D-Wave says technology used in its annealing systems can also serve gate-model architectures.
- The company reports its annealing systems control tens of thousands of qubits and couplers using 200 bias wires.
D-Wave Quantum Inc. (NYSE: QBTS) (“D-Wave”), a leader in quantum computing systems, software, and services and the world’s first commercial supplier of quantum computers, recently announced a breakthrough in gate-model quantum computing with the successful demonstration of scalable on-chip cryogenic control of qubits. This industry-first milestone advances the development of commercially viable gate-model quantum computers by significantly reducing the wiring required to control large numbers of qubits without degrading qubit fidelity.
This achievement validates that the on-chip cryogenic control technology D-Wave developed for its commercial annealing quantum processing units (QPUs) can also be applied to its gate-model architectures. In D-WaveTM annealing systems, the control technology uses multiplexed digital-to-analog converters to control tens of thousands of qubits and couplers with just 200 bias wires. The same control technology can also reduce gate-model wiring complexity while maintaining qubit fidelity, enabling large-scale, practical gate-model QPUs.
D-Wave is the world’s first and only dual-platform quantum computing company, building and delivering annealing and gate model quantum computing technology to address customers’ full set of complex computational problems.
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About D-Wave Quantum Inc.
D-Wave is a leader in the development and delivery of quantum computing systems, software, and services. We are the world’s first commercial supplier of quantum computers, and the only company building both annealing and gate-model quantum computers. Our mission is to help customers realize the value of quantum, today. Our quantum computers — the world’s largest — feature QPUs with sub-second response times and can be deployed on-premises or accessed through our quantum cloud service, which offers 99.9% availability and uptime. More than 100 organizations trust D-Wave with their toughest computational challenges. With over 200 million problems submitted to our quantum systems to date, our customers apply our technology to address use cases spanning optimization, artificial intelligence, research and more. Learn more about realizing the value of quantum computing today and how we’re shaping the quantum-driven industrial and societal advancements of tomorrow: www.dwavequantum.com.
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. These forward-looking statements are subject to a number of risks and uncertainties, including, among others, various factors beyond management’s control, including the risks set forth under the heading “Risk Factors” discussed under the caption “Item 1A. Risk Factors” in Part I of our most recent Annual Report on Form 10-K or any updates discussed under the caption “Item 1A. Risk Factors” in Part II of our Quarterly Reports on Form 10-Q and in our other filings with the SEC. 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.
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Questions around this news
How does on-chip cryogenic control reduce wiring in a quantum processor?
Control electronics placed on a chip and operated at very low temperatures can help manage signals near the qubits, reducing the need for a separate wire for each control connection. Multiplexing lets shared lines carry signals to multiple destinations. The design must also limit heat and electrical noise that could interfere with delicate quantum states.
How do gate-model and annealing quantum computers differ?
Gate-model systems manipulate qubits through sequences of quantum operations, or gates, to carry out an algorithm. Quantum annealing systems instead use controlled changes to a physical system to seek low-energy solutions to optimization problems. The approaches have different architectures and are suited to different computational methods; neither description alone establishes performance for a particular task.
What is qubit fidelity, and why does it matter?
Qubit fidelity describes how closely a prepared or manipulated quantum state matches the intended state. High fidelity matters because errors in operations or measurements can accumulate during a computation and make its output unreliable. Control systems therefore need to reduce wiring or other hardware complexity without introducing disturbances that compromise the qubits’ states.
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