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Author

Yi-Fan Tang

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Preprint Oct 2026

The magic cost of fermionic randomness

Sampling-based quantum advantage raises a basic resource question: how much non-Gaussianity is needed to reproduce the random-matrix statistics often associated with quantum chaos? Passive fermionic linear optics preserves Gaussian structure, and even Haar-random mode mixing fails to anticoncentrate for Slater inputs....

Chen-Feng Cao, Yi-Fan Tang, J. Eisert · 1 citation
Preprint Sep 2026

Fermionic quantum error correction is never free

This work shows that the logical space of any non-trivial fermionic error-correcting code contains no pure fermionic Gaussian state, utilizing a fundamental incompatibility between fermionic error correction and Wick's theorem.

Yi-Fan Tang, I. Roth, P. Faist et al. · 1 citation

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