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
Exeon Analytics expands management team for next growth phase2.9.2026 11:00:00 EEST | Press release
Exeon Analytics is expanding its management team with two new roles. Wayne Jennings takes on the newly created position of Chief Solutions Officer, and Johan Roman becomes Chief Revenue Officer. The appointments fall in the company’s anniversary year, ten years after its founding as an ETH Zurich spin-off, and create the structure for the next growth phase. Exeon Analytics delivers holistic security analytics for organizations facing growing blind spots, encrypted traffic and regulatory pressure. Wayne Jennings joined Exeon Analytics in July 2024 and initially led Support and Engineering. As Chief Solutions Officer, he is responsible for the technical customer lifecycle, from pre-sales and proof of concept through implementation to long-term technical account management, and for the technical enablement of partners. Before joining Exeon Analytics, he was a Senior Manager in Cybersecurity & Privacy at PwC Switzerland, focusing on threat intelligence and incident response. Johan Roman br
euroAtlantic Airways Expands Long-Haul Fleet With a New Airbus A330-300 Aircraft2.9.2026 10:00:00 EEST | Press release
euroAtlantic Airways (“EAA”), a Njord Partners portfolio company and a leading Portuguese aircraft wet-leasing and charter business, is pleased to announce the induction of a new Airbus A330-300 aircraft into its fleet, further strengthening its long-haul widebody capabilities and reinforcing the Company's growth trajectory in the ACMI and charter markets. The Airbus A330-300 is leased from Jackson Square Aviation (JSA). Only 15 years old, the aircraft is configured in a three-class layout of Business, Premium Economy and Economy, accommodating a total of 290 passengers, and features full lie-flat seating in Business Class along with personal in-seat entertainment monitors fitted across the entire cabin. The aircraft, which will be registered as CS-TGI after completing its normal process of approval with authorities, has already completed its delivery journey, departing Kuala Lumpur (KUL) and arriving into Beja, Portugal (BYJ) on 17 August 2026. This aircraft type is known for its effi
Interoperability and Trust Key to AI Commerce: Alipay+ and S&P Global Report2.9.2026 09:33:00 EEST | Press release
A new report by Alipay+, the unified wallet gateway of Ant International, in partnership with S&P Global, reveals a growing "commerce digitalisation gap", with people increasingly expecting seamless mobile payments and intelligent digital assistance, yet friction – from inconsistent payment acceptance to trust in AI – still define their experience. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260901394299/en/ The study, which surveyed 6,000 consumers across nine markets in Asia, Europe and the US on their cross-border spending habits, points to a major shift underway in global commerce — one where e-wallets, AI and interoperable digital ecosystems are becoming foundational to how consumers discover, transact and engage across borders. Key findings: Travel exposes gaps in global commerce infrastructure: More than half of consumers cite uncertainty around merchant acceptance (53%) or lack of access to preferred payment metho
Kontoor Brands Unveils Helly Hansen Growth Strategy and 2030 Financial Targets2.9.2026 09:30:00 EEST | Press release
Kontoor Brands, Inc. (NYSE: KTB) today announced Helly Hansen’s long-term growth strategy and 2030 financial targets, which Kontoor Brands will present at the Helly Hansen® Investor Day later today. The plan is designed to scale Helly Hansen globally while significantly expanding its profitability through 2030. "With 150 years of technical heritage and an authentic right to win globally, Helly Hansen is a brand with tremendous long-term growth potential," said Scott Baxter, Chief Executive Officer and Chairman of the Board of Kontoor Brands. "Strong alignment between our teams has allowed us to integrate quickly and move straight to executing against the opportunity ahead. Our sustained investment in Helly Hansen will be a catalyst for its next phase of growth, and we are confident in our ability to deliver significant value for our consumers, employees and shareholders for years to come." A Focused Growth Strategy: To deliver against these targets, Helly Hansen’s growth is anchored in
Axelspace Announces Partnership with Airbus Defence and Space to Deliver Satellite Imagery to a Broader Market2.9.2026 09:30:00 EEST | Press release
Axelspace Corporation (“Axelspace”), a leading microsatellite company committed to making “Space within Your Reach,” announced today a new agreement with Airbus Defence and Space, a global leader in Earth observation including optical and radar satellite imagery, to provide mid-resolution optical images captured by Axelspace’s Earth observation microsatellites “GRUS.” Under this strategic partnership, we will develop and deliver innovative solutions that meet long-term customer needs for utilizing satellite imagery. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260901360086/en/ GRUS is Axelspace's series of approximately 100 kg-class optical Earth observation microsatellites. GRUS-1 is currently operated as a four-satellite constellation, delivering high-frequency, wide-area imagery. This imagery, together with value-added solutions derived through processing and analysis, supports a broad range of industries, including agr
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