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Author

Eric Chitambar

2 papers indexed here

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Preprint Oct 2026

Universal Improvement of Channel Fidelity via Entanglement Assistance

This work presents an entanglement-assisted encoding and decoding strategy that yields a channel with higher worst-case fidelity than all of the given channels, and is universal, in the sense that the improvement holds regardless of what channels are given.

Xi-Nan Chen, Eric Chitambar · 0 citations
Preprint Jul 2026

Enhancing Entanglement Purification with Shared Randomness

It is proved that accumulating and shuffling improves the expected success probability and the success-weighted output Bell fidelity over the baseline without accumulating and shuffling, for every finite number of accumulation rounds and in the asymptotic limit.

Allen Zang, Bi-Kun Li, Xi-Nan Chen et al. · 1 citation

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