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Curated by: Qiskit (180 videos)
Qiskit Seminar Series with Elham Kashefi Your formal invite to weekly Qiskit videos ► https://ibm.biz/q-subscribe Speaker: Elham Kashefi Host: Maria Violaris Abstract: Quantum computers promise to efficiently solve not only problems believed to be intractable for classical computers, but also problems for which verifying the solution is also considered intractable. This raises the question of how one can check whether quantum computers are indeed producing correct results. This task, known as quantum verification, has been highlighted as a significant challenge on the road to scalable quantum computing technology. We review the existing approaches and compare them in terms of structure, complexity and required resources. We also comment on the use of cryptographic techniques which, for many of the presented protocols, has proven extremely useful in performing verification. Finally, we introduce the first practical protocol for verifying BQP computations with repetition as the only overhead. It is composable and statistically secure with exponentially-low bounds and can tolerate a constant amount of global noise. This new verification framework also lead to a first-of-its-kind class of error mitigation protocols which are exponentially effective and require no noise model or device tomography, making them straightforwardly implementable on existing, NISQ devices and scalable to future, larger ones. Bio: Elham Kashefi is a Professor of Computer Science at the University of Edinburgh, and CNRS Director of Research at the Sorbonne University. She has pioneered research in various aspects of quantum technology, including by co-founding the fields of secure quantum cloud computing and practical verification of quantum computing. She also co-founded the quantum cybersecurity start-up VeriQloud based in France. Elham was elected as the Chief Scientist for the UK National Quantum Computing Centre, the NQCC, and leads the NQCC Quantum Software Lab at University of Edinburgh.