Recently, Quantinuum announced a major upgrade to its quantum computer H1-1, which includes an expansion to 20 fully connected quantum bits and an increase in the number of quantum operations that can be done in parallel.
These improvements significantly enhance the computing power of the Honeywell-powered H1-1 quantum computer, which has set several industry records for quantum volume (a measure of overall performance) since its debut in the fall of 2020.
With these upgrades, developers are able to run more complex computations than ever before without sacrificing performance, and this upgrade is another example of our unique business model of continually upgrading our systems, even after they are in commercial use, to provide our s users with optimal performance."
The upgraded system has been extensively tested by internal and external users to verify performance and functionality, including a private preview with JP Morgan Chase.
"JP Morgan Chase's quantum computing team has been experimenting with Quantinuum's quantum computers, using intermediate circuit measurements and reuse and quantum conditional logic to take advantage of the computer's very high quantum capacity," the bank's Distinguished Engineer and Head of Quantum Computing and Communications Research Marco Dr. Pistoia said. "In our experiments, we used 20 quantum bits of the H1-1 computer on a quantum natural language processing algorithm for extracting text summaries. The results are almost identical to the reference values calculated using a noiseless simulator, verifying the high fidelity of the computer, as shown in our recent arXiv preprint. With this in mind, the Quantinuum computer continues to be an important resource for our research on quantum computing."
H1-1 computer for upgrade
The Quantinuum team has made several upgrades to the H1-1 computer, including.
Increasing the number of fully connected quantum bits from 12 to 20 while maintaining its low two-qubit gate error (typical performance fidelity of 99.7% and fidelity up to 99.8%) and key features such as intermediate circuit measurements, quantum bit reuse, quantum conditional logic, and all-to-all connectivity.
Increasing the number of gate regions from three to five allows H1-1 to perform more quantum operations simultaneously and allows for increased parallelization in circuit execution.
Uttley said this upgrade demonstrates the next important step in the H-series roadmap, the ability to increase the number of quantum bits and the number of gate regions without compromising gate fidelity.
A second version of the H1-type system, H1-2, is scheduled for a similar upgrade later this year. So far, details about the upcoming H1-2 system upgrade are scarce.
"These latest advances demonstrate that we understand how to scale the ion quantum hardware we capture, and we are continuing to make the expected progress on our technology roadmap," said Uttley. "We are adding quantum bits without compromising any functionality and maintaining fidelity, which is absolutely essential as we expand into future H-Series products."
Quantum computer H1-1 application
Quantinuum uses system model H1 machines to develop fully integrated solutions, such as its cybersecurity product Quantum Origin and its recently released quantum computing chemistry software InQuanto . (The H1 machine is accessed through a license for the InQuanto software.)
Quantinuum also provides commercial access to its trapped ion quantum computers, H1-1 and H1-2, and the H1 simulator through Microsoft's Azure Quantum.
Fabrice Frachon Azure Quantum Program Manager, said, "The ongoing upgrades to the Quantinuum system bring great benefits to Microsoft customers. microsoft is pleased to offer the new features to customers accessing the Quantinuum H system through Microsoft Azure Quantum and our Azure Quantum Credits program to customers accessing the Quantinuum H system with the new features of H1-1, which provides customers with free access to quantum hardware."
Quantinuum is the world's largest integrated quantum computing company, comprised of Honeywell Quantum Solutions' world-leading hardware and Cambridge Quantum's best-in-class middleware and applications.
Quantinuum accelerates quantum computing and the development of applications in chemistry, cybersecurity, finance and optimization. The company's open source development kit, TKET, provides platform-inclusive access to the world's leading quantum hardware and simulators and improves the performance of every QuantNuum product. quantinuum employs more than 400 people, including 300 scientists, at eight locations in the U.S., Europe and Japan.
Quantinuum's System Model H1 hardware technology, powered by Honeywell, was the first to pass the industry standard quantum volume 4096 benchmark test. in March 2020, Quantinuum (as Honeywell Quantum Solutions) committed to increasing the quantum capacity of its commercial H-Series by by one order of magnitude.