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Amir Arqand

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Preprint Oct 2026

No advantage from classical assistance for energy-constrained bosonic dephasing channels

We prove that four capacities of single-mode bosonic dephasing channels coincide under an average photon-number constraint: the unassisted quantum capacity, the unassisted private capacity, the two-way classically assisted quantum capacity, and the two-way public-classically assisted private capacity. The assistance ma...

Amir Arqand, Graeme Smith · 0 citations

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