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
Lattice to Showcase Advanced Edge AI Solutions at the FPGA-forum 202628.1.2026 23:00:00 EET | Press release
Lattice Semiconductor (NASDAQ: LSCC), the low power programmable leader, today announced its exhibition plan for the upcoming FPGA-forum 2026 taking place February 11 – 12, 2026 in Trondheim, Norway. As part of the event, Lattice Corporate Vice President of Software Solutions and Applications Engineering Eleena Ong will deliver a keynote presentation exploring how rapidly maturing AI technologies can turn FPGA platforms into innovation canvases for a much broader range of developers, sparking new application possibilities. Lattice will also deliver a technical presentation and host a demo showcase focused on how its low power FPGA solutions are advancing connectivity and edge AI applications. Who: Lattice Semiconductor What / When (GMT+1): Lattice Demo Showcase (Table #3), Feb 11-12 Keynote Feb. 11, 9:30 a.m. “Unlocking the Next Wave of FPGA Innovators with Generative and Agentic AI” Technical Presentation Feb. 12, 10 a.m. “Smaller. Cooler. Smarter: Lattice FPGAs’ Path to Uncompromised
Egon Zehnder Elects German Herrera as New Chair28.1.2026 21:01:00 EET | Press release
Egon Zehnder, the world’s premier leadership advisory firm, today announced that, in accordance with its established governance and three-year election cycle, German Herrera has been elected as the Firm’s next Chair by its worldwide partnership. Herrera will assume the role effective March 1, 2026. He will succeed Michael Ensser, who has held the position since 2022, in a planned succession at the conclusion of his regular term. Herrera joined the Firm in 1998 in Bogotá and has helped shape the Firm’s global presence, taking on a broad range of leadership roles, from co-leading the Global Family Business Advisory Practice to serving on the Executive Committee and the Market Council. Most recently, Herrera has guided Egon Zehnder’s U.S. market through a period of impressive growth and transformation, which today includes 15 offices and more than 150 consultants. As the first Latinx person in this role in the industry, he actively forges strategic partnerships and joint ventures. With ex
De' Longhi Group - Record Preliminary 2025 Revenues of €3.8 Billion, up 10.4% at Constant Exchange Rates28.1.2026 20:25:00 EET | Press release
Below are the preliminary 2025 revenues for the De’ Longhi S.p.A. Group: This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260128191504/en/ 12 months, revenues at € 3,801.5 million, growing at 8.7% (+10.4% at constant currency); fourth quarter, revenues at € 1,340.0 million, growing at 5.7% (+8.2% at constant currency). Fabio de' Longhi, CEO of the Group, stated: "The Group achieved solid growth at constant currency of 10.4% in 2025, characterized by consistent results throughout the year. We are particularly pleased with the excellent performance achieved in the fourth quarter, which successfully overcame the challenges posed by the current market environment. The household division consolidated its recent growth momentum during the quarter, with organic growth of 5.2% against a challenging year-over-year comparison. This performance was primarily driven by the structural trend in coffee, amplified by strategic media investmen
Organon Completes Divestiture of JADA ® System to Laborie28.1.2026 19:45:00 EET | Press release
Organon (NYSE: OGN), a global healthcare company with a mission to deliver impactful medicines and solutions for a healthier every day, announced today the successful closing of the sale of its JADA® System to Laborie Medical Technologies Corp. Please see our prior announcement for a summary of the transaction terms. Indications for Use The JADA® System is intended to provide control and treatment of abnormal postpartum uterine bleeding or hemorrhage when conservative management is warranted. Contraindications Ongoing intrauterine pregnancy Untreated uterine rupture Unresolved uterine inversion Current cervical cancer Known uterine anomaly Current purulent infection of vagina, cervix, or uterus For C-sections: Cervix <3 cm dilated before use of JADA Warnings Avoid excessive force when inserting JADA into the uterus or trauma to uterine wall may occur, including perforation. The safety and effectiveness of the JADA System in delivery at a gestational age <34 weeks or, if multiples, uter
Laserfiche Expands AI Data Capture with Auto-Classification to Transform Data into Business Intelligence28.1.2026 17:00:00 EET | Press release
Laserfiche — the leading SaaS provider of intelligent content management — today announced major enhancements to its AI-powered data extraction tool, Smart Fields. The update introduces automated document classification and tagging, allowing organizations to move from unstructured content to informed decisions in seconds. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260128228490/en/ Using natural language prompts instead of rigid, ruled-based OCR, Smart Fields can now identify document type — such as invoices, taxpayer identification forms, or student transcripts — and automatically apply the correct metadata template using AI. Users can also use Smart Fields to automatically add informational and security tags to files that meet certain criteria, defined using a natural language prompt. Users can capture key details, route documents, and apply the proper metadata tags instantly and at scale. “Success in today’s AI-driven
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