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Feb 23, 2022(Nanowerk News) Its been hypothesized that quantum computing will one day revolutionize information processing across a range of military and civilian applications from artificial intelligence, to supply chain optimization, to pharmaceuticals discovery, to cryptography.Prevailing predictions are that it will be decades before fully fault-tolerant quantum computers capable of solving important problems are available. As various quantum computing research and development efforts advance globally, however, DARPA wants to rigorously assess any quantum research claims that a useful fault-tolerant quantum computer could be built much sooner.DARPA announced the Underexplored Systems for Utility-Scale Quantum Computing (US2QC) program. US2QC aims to determine if an underexplored approach to quantum computing is capable of achieving utility-scale operation much faster than conventional predictions.DARPAs mission is to create and prevent strategic surprise, said Joe Altepeter, US2QC program manager in DARPAs Defense Sciences Office. If theres an underexplored area of quantum computing showing promise for a faster breakthrough than we previously expected, we want to explore it immediately and thoroughly verify and validate the approachs viability.An existing DARPA program, Quantum Benchmarking, is developing quantitative benchmarks on the software side to thoroughly assess potential applications where quantum computers could provide a meaningful improvement over classical computers for important problems. US2QC is a complementary hardware effort focused on verifying and validating system, component, and sub-system designs for a proposed fault-tolerant quantum computer.If a company or an organization thinks they can make a truly useful, really big, fault-tolerant quantum computer, we want to have a conversation with them, Altepeter said. We would like them to show us exactly why theyre convinced their machine is going to be revolutionary in the near future, and we want to work collaboratively with them, pay for additional experts to embed with their team, and help advance bold concepts that withstand rigorous testing.Because innovative approaches to building a quantum computer are extremely varied, US2QC is structured for maximum flexibility and will exclusively use tailorable Other Transaction agreements to fund proposals. The only common foundation for all proposals is Phase 0, in which proposers will quantitatively describe a complete utility-scale concept, including all components and sub-systems, projected performance capabilities against a variety of metrics, and anticipated technical risks and mitigation strategies.Theres no one verification and validation program that fits all the different quantum computing approaches out there, Altepeter said. That means we dont know what follow-on phases will look like or how long theyll be. Identifying key milestones will be unique for each project depending on how the Phase 0 validation and verification goes. If the proposed concept proves to be sound, Phase 0 could be very short. As teams meet follow-on phase milestones unique to their approach, well keep scaling the effort up.A program solicitation with all details for proposing to US2QC is available here.

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Are fault-tolerant quantum computers on the horizon? - Nanowerk