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
Reply and IEO Launch Collaboration to Co-Develop and Train Domain-Specific Large Language Models for Oncology4.6.2026 11:10:00 EEST | Press release
Reply [EXM, STAR: REY] and the European Institute of Oncology (IEO) have launched a collaboration focused on the co-development and training of domain-specific Large Language Models for oncology. The initiative brings together Reply’s expertise in building frontier generative models grounded in enterprise knowledge with the IEO’s clinical expertise and data assets to develop models tailored to highly complex oncology settings. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260604488955/en/ Reply and the European Institute of Oncology (IEO) have launched a collaboration focused on the co-development and training of domain-specific Large Language Models for oncology. As a first step, the IEO’s clinical teams and Information Systems department are working with a multidisciplinary Reply team with deep expertise in healthcare and LLM specialisation to define and prioritise the use cases that will guide development, while also map
Corona Launches 2026 Beach 100 Guide, Invites The World To Explore The Outdoors This Summer4.6.2026 11:00:00 EEST | Press release
Corona, the world’s most valuable beer brand1, today announced the return of its annual global beach guide, the 2026 Corona Beach 100, ahead of World Oceans Day on June 8. The highly anticipated second edition spotlights 100 breathtaking and varied ocean-front destinations around the world while celebrating the natural ecosystems and local communities that help bring them to life. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260604412899/en/ 2026 Corona Beach 100 - Legzira Beach, Morocco Connected to Corona’s “This Is Living” platform, which invites consumers to step outside and live life to the fullest this summer, the 2026 guide features 27 new beaches, hundreds of localized Tripadvisor travel experiences inspired by the world’s most breathtaking coastlines, and expanded Beach 100 Grants with Oceanic Global – all inviting people to answer “Living Is Calling” through exploration, connection, and conservation. “Following t
UK AI Minister Kanishka Narayan Joins The AI Summit London as 10th Anniversary Agenda Expands Across Enterprise AI, Innovation and Policy4.6.2026 11:00:00 EEST | Press release
The AI Summit London today revealed the full agenda for its highly anticipated 10th anniversary edition, delivering its most expansive and future-focused programme to date. Taking place 10–11 June at Tobacco Dock as the headline AI event of London Tech Week 2026, the Summit expects more than 5,000 attendees, 300 speakers, 100+ sponsors and exhibitors, and a special executive presentation from Kanishka Narayan, Minister for AI and Online Safety, Department for Science, Innovation and Technology, across two days dedicated to the commercial realities and transformative potential of artificial intelligence. The 10th anniversary has been designed to move the conversation beyond experimentation and into enterprise-wide execution. New in 2026, the programme introduces The AI Impact Arena, delivering focused briefings and live demos, and The Start-Up & Investor Village, featuring innovative founder content and rising AI stars. Rounding out the attendee experience will be refreshed conference t
Lantern Expands Its Platform for Solving the Data Trust Problem with Strategic Acquisition and Key Executive Hires4.6.2026 11:00:00 EEST | Press release
Lantern Limited (“Lantern”), the data assurance platform for private markets, announced today a strategic acquisition, expanded platform capabilities, and key leadership additions to address one of private markets biggest operational challenges: transforming fragmented, disconnected data across multiple sources into trusted, actionable intelligence. Private markets run on data, yet much of that data remains siloed, trapped in PDFs, and processed through highly manual workflows across both fund managers and investors. While GPs have increasingly modernized how they manage and report fund information internally, LPs still spend billions of dollars each year manually extracting, normalizing, and reconciling data from capital notices, quarterly statements, and other fund documents. With the acquisition of Freyda Limited (“Freyda”), one of the leading AI document intelligence platforms for institutional Limited Partners and fund administrators, Lantern now delivers an end-to-end solution fo
KAYTUS Launches MotusAI Enterprise Token Management Platform4.6.2026 10:02:00 EEST | Press release
KAYTUS, a leading provider of AI infrastructure and liquid cooling solutions, today announced the launch of enterprise-grade token management capabilities within MotusAI, enabling organizations to rapidly build, deploy, and operate secure on-premises AI token platform. This pioneering infrastructure enhancement transforms traditional GPU hardware into a unified, governable, and highly efficient internal token service ecosystem. By enabling rapid private deployment, MotusAI provides enterprises with a cost-competitive foundation for accelerating the scale-up of enterprise-grade AI agents while ensuring strong data privacy. Why Enterprises Must Build a Private Token Management Platform Now? As enterprise AI evolves from isolated model-based tools to interconnected AI agent systems that enable deep workflow automation, tokens are emerging as the fundamental “computing currency” of the modern organization. While standard LLM queries typically involve predictable, one-off inference requests
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