Toshiba’s Double-Transmon Coupler Will Realize Faster, More Accurate Superconducting Quantum Computers
15.9.2022 18:23:00 EEST | Business Wire | Press release
Researchers at Toshiba Corporation (TOKYO: 6502) have achieved a breakthrough in quantum computer architecture: the basic design for a double-transmon coupler that will improve the speed and accuracy of quantum computation in tunable couplers. The coupler is a key device in determining the performance of superconducting quantum computers.
This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20220913006341/en/
Conceptual diagram of a superconducting quantum computer (Graphic: Business Wire)
Tunable couplers in a superconducting quantum computer link two qubits and perform quantum computations by turning on and off the coupling between them. Current technology can turn off the coupling of transmon qubits with close frequencies, but this is prone to crosstalk errors that occur on one of the qubits when the other qubit is irradiated with electromagnetic waves for control. In addition, current technology cannot completely turn off coupling for qubits with significantly different frequencies, resulting in errors due to residual coupling.
Toshiba has recently devised a double-transmon coupler that can completely turn on and off the coupling between qubits with significantly different frequencies. Completely turning on enables high-speed quantum computations with strong coupling, while completely turning off eliminates residual coupling, which improves quantum computation speeds and accuracy. Simulations with the new technology have shown it realizes two-qubit gates, basic operations in quantum computation, with an accuracy of 99.99% and a processing time of only 24 ns.
Toshiba’s double-transmon coupler can be applied to fixed-frequency transmon qubits, realizing high stability and ease of design. It is the first to realize coupling between fixed-frequency transmon qubits with significantly different frequencies that can be completely switched on and off, and to deliver a high-speed, accurate two-qubit gate.
The technology is expected to advance the realization of higher-performance quantum computers that will contribute in such areas as the achievement of carbon neutrality and the development of new drugs. Details of the technology were published in the United States on September 15 in the Physical Review Applied, a journal of the American Physical Society (https://doi.org/10.1103/PhysRevApplied.18.034038).
The full release: https://www.global.toshiba/ww/technology/corporate/rdc/rd/topics/22/2209-01.html
About Toshiba
Toshiba Corporation leads a global group of companies that combines knowledge and capabilities from over 140 years of experience in a wide range of businesses—from energy and social infrastructure to electronic devices—with world-class capabilities in information processing, digital and AI technologies. These distinctive strengths support Toshiba’s continued evolution toward becoming an Infrastructure Services Company that promotes data utilization and digitization, and one of the world’s leading cyber-physical-systems technology companies. Guided by the Basic Commitment of the Toshiba Group, “Committed to People, Committed to the Future,” Toshiba contributes to society’s positive development with services and solutions that lead to a better world. The Group and its 120,000 employees worldwide secured annual sales of 3.3 trillion yen (US$27.4 billion) in fiscal year 2021.
Find out more about Toshiba at www.global.toshiba/ww/outline/corporate.html
To view this piece of content from cts.businesswire.com, please give your consent at the top of this page.
View source version on businesswire.com: https://www.businesswire.com/news/home/20220913006341/en/
Contact information
Toshiba Corporation
Corporate Communications Div.
Tatsuro Oishi / Naoko Oura
media.relations@toshiba.co.jp
About Business Wire
For more than 50 years, Business Wire has been the global leader in press release distribution and regulatory disclosure.
Subscribe to releases from Business Wire
Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.
Latest releases from Business Wire
Fasset Hits $1B Valuation as SBI Group Leads $68M Series C to Scale AI-Powered Stablecoin Neobanking24.8.2026 09:03:00 EEST | Press release
Fasset, the AI-powered stablecoin neobanking platform, today announced it has raised $68 million in Series C funding at a $1 billion valuation. The financing was led by SBI Group and follows Fasset’s $51 million Series B earlier this year, which brought Speedinvest onto the cap table alongside a group of strategic investors. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260823503947/en/ Mohammad Raafi Hossain, Co-Founder and CEO, Fasset The new capital will support the expansion of Own Network, Fasset’s regulated financial network that connects banks, telcos, payment and liquidity providers to enable settlement across international markets. Fasset will also increase investment in agentic AI-enabled systems supporting corridor banking, stablecoin settlement and tokenized asset infrastructure. After raising Series B in May, Fasset has now raised a total of $119 million in 2026. The financing marks Fasset’s entry into the glob
Zanders Expands DACH Region with New Office in Vienna, Austria24.8.2026 08:11:00 EEST | Press release
Zanders, the global treasury, risk, and technology consultancy, today announced a significant expansion of its DACH region with the opening of a new office in Vienna. The move builds on Zanders' continued growth across Germany, Austria, and Switzerland, and marks another step in the firm's strategy of deepening its presence in the markets where client demand for specialized treasury, risk, and corporate finance advisory is growing fastest. DACH has been one of Zanders' priority regions for several years, with the firm steadily expanding its team and client base across Germany and Switzerland. Austria represents a natural next step in that growth: in conversations with clients in the market, Zanders has seen growing interest in treasury transformation and financing support, as companies work through interest rate volatility, refinancing needs, and a broader shift toward more digitized, centralized treasury operations. The new Vienna office allows Zanders to be closer to clients' operati
Novotech Strengthens Presence in Japan with Opening of Tokyo Office24.8.2026 02:01:00 EEST | Press release
Novotech, a leading global biotech CRO and full-service clinical research organization, has strengthened its established presence in Japan with the opening of a new office in Tokyo. The investment builds on Novotech’s existing operations and clinical trial activity in Japan and further enhances its ability to support Japanese biopharma companies as they advance programs regionally and across key international markets. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260823592174/en/ Takeshi Mori, Novotech Country Head, Japan The Tokyo office will serve as a strategic hub for Novotech’s growing operations in Japan, providing enhanced local expertise and strengthening collaboration with clients, partners, research institutions, and innovation ecosystems across the region. Novotech is currently supporting ongoing studies in Japan and provides sponsors with integrated support across early-phase clinical development in Australia, F
FDA Authorizes ZYN ULTRA Nicotine Pouches Following Scientific Review21.8.2026 22:11:00 EEST | Press release
Philip Morris International Inc. (NYSE: PM) today announces that the U.S. Food and Drug Administration (FDA) issued Marketing Granted Orders to PMI’s U.S. affiliate, Swedish Match USA, Inc., authorizing the marketing of 11 ZYN ULTRA moist oral nicotine pouch products, including all 9mg variants and one 11mg variant. Additional 11mg variants remain under scientific review. Today’s action further enhances PMI’s leadership role in the smoke-free category. “We are delighted with the FDA’s decision to authorize a range of ZYN ULTRA products, which will build on ZYN’s position as America’s leading smoke-free product brand,” said Stacey Kennedy, PMI U.S. CEO. “We look forward to expanding our portfolio of better choices for the 45 million Americans who consume nicotine products.” ZYN ULTRA positions the brand to further extend its category leadership among legal-age consumers of nicotine products. Like the flagship FDA-authorized ZYN pouches, ZYNULTRA, with its higher moisture content, is fre
58% of Consumers Say They Don't Care Whether a Product is a National Brand or Private Label. They Just Buy What They Need21.8.2026 13:00:00 EEST | Press release
As fast-moving consumer goods (FMCG) prices rose 26% globally between 2021 and 2025, consumers have become more deliberate about where they save and where they spend. NielsenIQ (NYSE: NIQ) has released new findings showing that private label is no longer viewed simply as a lower-cost substitute, but as a credible competitor across value, mainstream, and premium segments. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260819950224/en/ Private label is no longer just a value play. The findings, published in NIQ’s latest report, A Tale of Two Consumers: The Polarized Mindsets Reshaping Global Consumption, created in collaboration with World Data Lab, show how consumer polarization is redefining value and reshaping competition on the shelf. The report also draws on insights from NIQ's 2025reportFinding Harmony on the Shelfwhich documented changing perceptions of private label products. Key findings from these reports include: 58
In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.
Visit our pressroom