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quant-ph2025
Strong converse exponent of channel interconversion
Aadil Oufkir, Yongsheng Yao, Mario Berta
In their seminal work, Bennett et al. [IEEE Trans. Inf. Theory (2002)] showed that, with sufficient shared randomness, one noisy channel can simulate another at a rate equal to the…
quant-ph2025
Strong converse Exponents of Partially Smoothed Information Measures
Mario Berta, Yongsheng Yao
Partially smoothed information measures are fundamental tools in one-shot quantum information theory. In this work, we determine the exact strong converse exponents of these measur…
quant-ph2025
Channel coding against quantum jammers via minimax
Michael X. Cao, Yongsheng Yao, Mario Berta
We introduce a minimax approach for characterizing the capacities of fully quantum arbitrarily varying channels (FQAVCs) under different shared resource models. In contrast to prev…