The Hamming quantum kernel, built from full measurement statistics of the same quantum circuits used for fidelity kernels, outperforms the fidelity kernel at 15+ qubits and the classical Gaussian kernel on synthetic quantum data up to 27 qubits.
Quantum kernel methods under scrutiny: a benchmarking study
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All embedding quantum kernels can be understood as entangled tensor kernels, yielding new insights into their inductive bias and potential dequantization.
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Support Vector Machine with a Scalable Quantum Kernel
The Hamming quantum kernel, built from full measurement statistics of the same quantum circuits used for fidelity kernels, outperforms the fidelity kernel at 15+ qubits and the classical Gaussian kernel on synthetic quantum data up to 27 qubits.
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New perspectives on quantum kernels through the lens of entangled tensor kernels
All embedding quantum kernels can be understood as entangled tensor kernels, yielding new insights into their inductive bias and potential dequantization.