Quantum Circuit Learning [1]: Hybrid Framework for machine learning with low-depth quantum circuit. QCL takes input data, iteratively tunes circuit parameters and gives desired output by utilizing gradient-based optimization of parameters similar to backpropagation method. Unitary Gate: Reversible transformations on quantum states; building blocks of quantum circuit; [1] K. Mitarai, M. Negoro, M. Kitagawa, and ...
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