Rigetti Introduces Novel Chip Fabrication Process For Scalable, High Performing QPUs
Rigetti Computing (Nasdaq: RGTI) has introduced a novel chip fabrication process called Alternating-Bias Assisted Annealing (ABAA), recently published in Nature Communications Materials. This technique allows for more precise qubit frequency targeting, enabling improved execution of 2-qubit gates and reducing defects, contributing to higher fidelity in quantum processors.
ABAA is now being used to fabricate chips for Rigetti QPUs, including the Novera™ QPU and the upcoming 84-qubit Ankaa™-3 system, expected to be deployed by the end of 2024. The process involves applying a series of low, alternating voltages at room temperature to the oxide barrier of Josephson Junctions, allowing for precise qubit frequency control before chip packaging.
This scalable technique improves qubit addressability, speeds up interactions, and enhances overall QPU performance and scalability.
Rigetti Computing (Nasdaq: RGTI) ha introdotto un nuovo processo di fabbricazione dei chip chiamato Alternating-Bias Assisted Annealing (ABAA), recentemente pubblicato su Nature Communications Materials. Questa tecnica consente un targeting della frequenza dei qubit più preciso, migliorando l'esecuzione delle porte a 2 qubit e riducendo i difetti, contribuendo così a una maggiore fedeltà nei processori quantistici.
ABAA è ora utilizzato per fabbricare chip per le QPU di Rigetti, inclusa la Novera™ QPU e il prossimo sistema Ankaa™-3 a 84 qubit, previsto per essere lanciato entro la fine del 2024. Il processo implica l'applicazione di una serie di voltaggi bassi e alternati a temperatura ambiente sulla barriera di ossido dei Giunzioni di Josephson, permettendo un preciso controllo delle frequenze dei qubit prima dell'imballaggio del chip.
Questa tecnica scalabile migliora l'indirizzabilità dei qubit, accelera le interazioni e potenzia le prestazioni e la scalabilità complessive delle QPU.
Rigetti Computing (Nasdaq: RGTI) ha presentado un nuevo proceso de fabricación de chips llamado Alternating-Bias Assisted Annealing (ABAA), recientemente publicado en Nature Communications Materials. Esta técnica permite un apuntado de frecuencia de qubit más preciso, mejorando la ejecución de puertas de 2 qubits y reduciendo defectos, lo que contribuye a una mayor fidelidad en los procesadores cuánticos.
ABAA se está utilizando ahora para fabricar chips para las QPU de Rigetti, incluyendo la Novera™ QPU y el próximo sistema Ankaa™-3 de 84 qubits, que se espera que se implemente a finales de 2024. El proceso implica la aplicación de una serie de voltajes bajos y alternos a temperatura ambiente en la barrera de óxido de las Uniones de Josephson, lo que permite un control preciso de la frecuencia de los qubits antes del empaquetado del chip.
Esta técnica escalable mejora la direccionalidad de los qubits, acelera las interacciones y mejora el rendimiento y la escalabilidad general de la QPU.
리게티 컴퓨팅(Rigetti Computing)(Nasdaq: RGTI)는 Alternating-Bias Assisted Annealing (ABAA)라는 새로운 칩 제작 공정을 소개했으며, 최근 Nature Communications Materials에 발표되었습니다. 이 기술은 보다 정밀한 큐비트 주파수 타겟팅을 가능하게 하여 2큐비트 게이트의 실행을 개선하고 결함을 줄이며, 양자 프로세서의 높은 충실도에 기여합니다.
ABAA는 이제 리게티 QPU를 위해 칩을 제작하는 데 사용되고 있으며, 여기에는 Novera™ QPU와 2024년 말까지 배포될 예정인 84큐비트 Ankaa™-3 시스템이 포함됩니다. 이 과정은 조셉슨 접합의 산화막 장벽에 대해 낮고 교차하는 전압을 실온에서 적용하여 칩 포장 전 큐비트 주파수를 정밀하게 제어할 수 있게 합니다.
이 확장 가능한 기술은 큐비트 주소 지정 능력을 개선하고, 상호 작용을 가속화하며, QPU의 전반적인 성능과 확장성을 향상시킵니다.
Rigetti Computing (Nasdaq: RGTI) a introduit un nouveau processus de fabrication de puces appelé Alternating-Bias Assisted Annealing (ABAA), récemment publié dans Nature Communications Materials. Cette technique permet un ciblage plus précis de la fréquence des qubits, améliorant ainsi l'exécution des portes à 2 qubits et réduisant les défauts, contribuant à une fidélité plus élevée dans les processeurs quantiques.
L'ABAA est maintenant utilisée pour fabriquer des puces pour les QPU de Rigetti, y compris la Novera™ QPU et le prochain système Ankaa™-3 à 84 qubits, prévu d'être déployé d'ici la fin de 2024. Le processus consiste à appliquer une série de basses tensions alternées à température ambiante sur la barrière d'oxyde des jonctions de Josephson, permettant un contrôle précis de la fréquence des qubits avant l'emballage des puces.
Cette technique évolutive améliore l'adressabilité des qubits, accélère les interactions et améliore les performances et la scalabilité globales des QPU.
Rigetti Computing (Nasdaq: RGTI) hat einen neuartigen Chip-Fertigungsprozess namens Alternating-Bias Assisted Annealing (ABAA) eingeführt, der kürzlich in Nature Communications Materials veröffentlicht wurde. Diese Technik ermöglicht eine präzisere Zielanpassung der Qubit-Frequenzen, verbessert die Ausführung von 2-Qubit-Gates und reduziert Defekte, was zu einer höheren Fidelity in quantenprozessoren beiträgt.
ABAA wird jetzt zur Herstellung von Chips für Rigetti QPUs verwendet, einschließlich der Novera™ QPU und dem kommenden 84-Qubit Ankaa™-3-System, das Ende 2024 implementiert werden soll. Der Prozess umfasst die Anwendung einer Reihe von niedrigen, alternierenden Spannungen bei Raumtemperatur auf die Oxidschicht der Josephson-Junktionen, um eine präzise Frequenzkontrolle der Qubits vor dem Chip-Package zu ermöglichen.
Diese skalierbare Technik verbessert die Adressierbarkeit der Qubits, beschleunigt die Interaktionen und steigert die Gesamtleistung und Skalierbarkeit der QPU.
- Introduction of ABAA technique for more precise qubit frequency targeting
- Improved execution of 2-qubit gates and reduction in defects
- Enhanced scalability and performance of quantum processors
- Publication of research in Nature Communications Materials
- Implementation of ABAA in current and upcoming Rigetti QPUs
- None.
Rigetti's Alternating-Bias Assisted Annealing (ABAA) technique represents a significant advancement in quantum chip fabrication. By enabling more precise qubit frequency targeting, it addresses a critical challenge in quantum computing: the reproducibility and control of Josephson Junctions (JJs). This breakthrough could lead to higher fidelity quantum operations and improved scalability of quantum processors.
The simplicity and scalability of ABAA, compared to complex alternatives like laser trimming, make it particularly promising for large-scale quantum processor unit (QPU) production. By improving qubit addressability and speeding up interactions, this technique could accelerate Rigetti's progress towards more powerful quantum systems, potentially giving them a competitive edge in the rapidly evolving quantum computing landscape.
Rigetti's ABAA technique is a notable innovation in the semiconductor fabrication process for quantum chips. It addresses a key challenge in superconducting qubit technology without requiring significant changes to the existing fabrication infrastructure. This could translate to cost-effective scaling of quantum processors, potentially accelerating the path to quantum advantage.
The ability to heal defects and imperfections in JJs is particularly intriguing, as it could lead to improved yield rates in quantum chip production. This could be a game-changer for the economics of quantum computing, potentially reducing costs and increasing the availability of high-performance quantum systems for various applications.
Rigetti's publication in Nature Communications Materials lends credibility to their technological advancements. The ABAA technique could potentially strengthen Rigetti's competitive position in the quantum computing market. However, investors should note that while promising, the real-world impact on Rigetti's financial performance remains to be seen.
The anticipated deployment of the 84-qubit Ankaa-3 system by the end of 2024 using this technique will be a important milestone to watch. If successful, it could lead to increased interest from potential customers and partners, potentially driving revenue growth and market share in the medium term. Nonetheless, the quantum computing sector remains highly competitive and rapidly evolving, with significant risks and uncertainties.
Rigetti’s novel technique, Alternating-Bias Assisted Annealing (ABAA), allows for more precise qubit frequency targeting, enabling improved execution of 2-qubit gates and a reduction in defects, which both contribute to higher fidelity. This work was recently published in Nature Communications Materials.
BERKELEY, Calif., Aug. 15, 2024 (GLOBE NEWSWIRE) -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that its paper introducing a novel chip fabrication process, Alternating-Bias Assisted Annealing (ABAA), was recently published in Nature Communications Materials. ABAA allows for more precise qubit frequency targeting, enabling improved execution of 2-qubit gates and improvement in performance, which both contribute to higher fidelity. This technique is now being leveraged to fabricate chips for Rigetti QPUs, including the Novera™ QPU and the upcoming Ankaa™-3 system.
The basis of Rigetti’s superconducting qubits are Josephson Junctions (JJs), which are two thin layers of superconducting metal (aluminum) separated by a barrier (aluminum oxide). Electrons are able to tunnel across the insulator from one electrode to another — resulting in a characteristic frequency for the qubit that allows for it to be controlled and measured. While the reproducibility and energy loss in these junctions has been difficult to control, the simplicity, scalability, and ease of fabrication of these superconducting devices makes them one of the most desirable platforms for building quantum computers. Finding a solution to the junction reproducibility problem has been a long-standing goal in the field.
Rigetti researchers discovered that by applying a series of low, alternating voltages at room temperature to the oxide barrier, the qubit frequencies can be precisely targeted. The ability to controllably tune qubits prior to a chip being packaged is essential for large-scale QPU production. This improves the addressability of the qubits, speeds up interactions, and improves the scalability of the technology. Unlike more complicated solutions that address the problem of tuning frequency, which often require laser trimming of the chip, the ABAA technique is a simple and scalable process that only requires sending pulses of voltage to the chip.
“We’ve long known that having our own foundry is a tremendous asset to our chip design and fabrication processes. Introducing the ABAA technique is a perfect example of our ability to rapidly test and implement new methods to improve our capabilities,” says Dr. Subodh Kulkarni, Rigetti CEO. “We believe this new technique strengthens our path to scaling to even higher qubit count systems with greater control over our qubit performance.”
In addition to improving the precision and the accuracy of Rigetti’s qubits, the ABAA technique has also proven to heal some of the defects and imperfections in the JJs, allowing for clearer communication between qubits and couplers — which also leads to improved performance due to less interference on the circuit.
The Company will leverage the ABAA technique for its anticipated 84-qubit Ankaa-3 system, which is expected to be deployed by the end of 2024.
About Rigetti
Rigetti is a pioneer in full-stack quantum computing. The Company has operated quantum computers over the cloud since 2017 and serves global enterprise, government, and research clients through its Rigetti Quantum Cloud Services platform. The Company’s proprietary quantum-classical infrastructure provides high performance integration with public and private clouds for practical quantum computing. Rigetti has developed the industry’s first multi-chip quantum processor for scalable quantum computing systems. The Company designs and manufactures its chips in-house at Fab-1, the industry’s first dedicated and integrated quantum device manufacturing facility. Learn more at www.rigetti.com.
Rigetti Computing Media Contact:
press@rigetti.com
Cautionary Language Concerning Forward-Looking Statements
Certain statements in this communication may be considered “forward-looking statements” within the meaning of the federal securities laws, including but not limited to, expectations with respect to the Company’s business and operations, including its expectations related to the use of the ABAA technique for qubit frequency targeting resulting in improvements in chip performance and allowing for scaling to higher qubit systems with greater control over qubit performance and expectations of the ABAA technique in connection with the anticipated 84-qubit Ankass-3 system. These forward-looking statements are based upon estimates and assumptions that, while considered reasonable by the Company and its management, are inherently uncertain. Factors that may cause actual results to differ materially from current expectations include, but are not limited to: the Company’s ability to achieve milestones, technological advancements, including with respect to its technology roadmap, help unlock quantum computing, and develop practical applications; the ability of the Company to obtain government contracts successfully and in a timely manner and the availability of government funding; the potential of quantum computing; the ability of the Company to expand its QPU sales; the success of the Company’s partnerships and collaborations; the Company’s ability to accelerate its development of multiple generations of quantum processors; the outcome of any legal proceedings that may be instituted against the Company or others; the ability to maintain relationships with customers and suppliers and attract and retain management and key employees; costs related to operating as a public company; changes in applicable laws or regulations; the possibility that the Company may be adversely affected by other economic, business, or competitive factors; the Company’s estimates of expenses and profitability; the evolution of the markets in which the Company competes; the ability of the Company to implement its strategic initiatives, expansion plans and continue to innovate its existing services; the expected use of proceeds from the Company’s past and future financings or other capital; the sufficiency of the Company’s cash resources; unfavorable conditions in the Company’s industry, the global economy or global supply chain, including financial and credit market fluctuations and uncertainty, rising inflation and interest rates, disruptions in banking systems, increased costs, international trade relations, political turmoil, natural catastrophes, warfare (such as the ongoing military conflict between Russia and Ukraine and related sanctions and the state of war between Israel and Hamas and related threat of a larger conflict), and terrorist attacks; and other risks and uncertainties set forth in the section entitled “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, the Company’s Form 10-Q for the three months ended June 30, 2024, and other documents filed by the Company from time to time with the SEC. These filings identify and address other important risks and uncertainties that could cause actual events and results to differ materially from those contained in the forward-looking statements. Forward-looking statements speak only as of the date they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and the Company assumes no obligation and does not intend to update or revise these forward-looking statements other than as required by applicable law. The Company does not give any assurance that it will achieve its expectations.
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