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
Lebrikizumab Delivered Significant Skin Clearance and Improved Disease Severity in Children With Moderate-to-severe Atopic Dermatitis16.3.2026 12:53:00 EET | Press release
Almirall, S.A. (ALM), a global biopharmaceutical company focused on medical dermatology, today announced positive, top-line results from the pivotal Phase 3 ADorable-1 trial evaluating efficacy and safety of lebrikizumab for children and adolescents with moderate-to-severe atopic dermatitis aged 6 months to <18 years. Lebrikizumab met both co-primary and key secondary endpoints, delivering near-complete skin clearance, reduced disease severity, itch relief and improved quality of life at Week 16. Skin conditions can have a significant impact on people’s lives, both physically and emotionally3. Atopic dermatitis is more prevalent in childhood than adulthood and typically begins early in life4, with most cases appearing by the first year of life (60%) or before 5 years of age (85%)5. The emotional impact of atopic dermatitis can disrupt crucial formative years, with disease burden increasing alongside severity and often leading to sleep disruption, school absenteeism, and difficulties in
Experian Marks a Breakthrough in Consumer AI with the Next Evolution of Its Virtual Assistant16.3.2026 12:00:00 EET | Press release
Experian today unveiled the next evolution of the Experian Virtual Assistant, EVA™, a significant advancement in its Consumer First AI strategy that expands personalized, conversational financial guidance to millions of consumers. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260316538160/en/ Experian today unveiled the next evolution of the Experian Virtual Assistant, EVA™. “This next generation of EVA reflects the direction of our consumer AI strategy,” said Debbie Hsu, Executive Vice President of Product, Experian Consumer Services. “We are bringing together conversational AI, personalization, and our trusted data foundation to deliver guidance that is intuitive, relevant, and actionable. Our focus is on helping consumers make smarter financial decisions in ways that feel simple and empowering.” Built to scale intelligent financial guidance through a more adaptive experience, the enhanced EVA expands beyond credit insigh
Syngenta deepens research capabilities with QuantumBasel partnership16.3.2026 09:00:00 EET | Press release
At the World Agri-Tech Innovation Summit, Syngenta, a global leader in agricultural innovation, today announced it is exploring how quantum computing can help farmers meet the growing demands of food production in a changing climate. The company has partnered with QuantumBasel, Switzerland's first commercial quantum computing hub, to apply quantum technologies to agricultural research and development. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260316646014/en/ Ion trap, which uses electromagnetic fields to confine and control ions for use as quantum bits (qubits). Farmers worldwide face mounting pressure to produce more food sustainably amid unpredictable weather and evolving pest and disease challenges. Meeting these demands requires new scientific approaches that go beyond what classical computing can deliver, particularly when it comes to understanding the complex molecular and biological systems that underpin crop sc
Triton Partners Successfully Closes Fund 6 at €5.5 Billion Target16.3.2026 09:00:00 EET | Press release
Triton Partners today announces the successful close of its sixth flagship mid-market fund (“T6” or “the Fund”) on target at €5.5 billion, the largest fund to date for Triton. The Fund has raised capital from new and existing investors globally, underscoring the continued confidence of Limited Partners in Triton’s European mid-market strategy and the Firm’s ability to build better businesses. Triton’s Mid-Market buyout (TMM) strategy focuses on its core sectors of industrial technology, business services and healthcare. As a responsible owner of choice, T6 will invest where its market and investment insights provide an edge, positioning the firm to capitalise on attractive opportunities, supported by the Accelerator Unit, Europe’s largest value creation team. T6 seeks to maintain the strong performance of previous funds, all having achieved top quartile returns. Reflecting this consistent track record, Triton was recently named as one of three European managers in the HEC global univer
NTT DATA Launches GCC Innovation Acceleration Program to Support Innovation Creation by Global Companies16.3.2026 05:30:00 EET | Press release
NTT DATA, a global leader in AI, digital business and technology services, today announced the launch of its GCC Innovation Acceleration Program. This is designed to support global companies rapidly establishing and scaling their strategic offshore hubs in India, including Global Capability Centers (GCC) and other innovation and delivery hubs. Launched in October 2025, the program aims to support more than 50 companies over the next three years. The demand for highly skilled IT personnel has expanded globally, and as a result, companies are increasingly using overseas bases to meet innovation needs. NTT DATA identified India as a stand-out market to launch the GCC Innovation Acceleration Program because of its abundance of talent and strong technical capabilities. India’s Global Capability Center ecosystem, delivering IT services and back-office functions to multinationals, is poised for strong growth of nearly 70%, targeting $110 billion in 2030 from the current $65 billion, according
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