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No abstract

We find that our W state witnesses derived with a Support Vector Machine have comparable noise tolerance while requiring fewer measurements than the fidelity method; this result is physically verified on an IBM Quantum Processor.

We experimentally demonstrate the generation of telecom-band biphotons hyperentangled in both the polarization and frequency DoFs using a periodically-poled silica fiber and observe entanglement concurrences above 0.95 for both DOFs.