Event: Unsupervised Machine Learning on the Rigetti Quantum Computer


May 9, 2018
12:00 PM - 1:00 PM


ERC 161


The fourth tutorial in the Quantum Computing Tutorial Series

Speaker: Johannes Jotterbach

Recent years have seen a stunning progress in the control of quantum systems and the scalable manufacturing of super-conducting quantum hardware. Along with this progress came a focus shift in the study of quantum algorithms giving rise to new hybrid quantum/classical algorithms that can be run on near-term quantum devices without immediate need for facult-tolerance. These algorithms focus on short-depth parameterized circuits and use quantum computation as a subroutine in a larger classical optimization loop. At Rigetti, we build a computing platform targetting such applications via a flexible cloud API. This talk gives a gentle introduction to the physics behind gate-based quantum computation. I introduce Quil, the Quantum Instruction Language, as a programming language abstraction akin to quantum assembler dialects, to enable these computations via the Forest cloud API. Finally, I show how the full computing stack can be used to run a hybrid quantum/classical algorithm for unsupervised machine learning on a 19-qubit processor. 

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