Author

Ryuji Takagi

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Preprint Oct 2026

Computational entanglement distillation beyond pure states: efficient protocols and fundamental limitations

The information-theoretic approach to entanglement typically relies on arbitrarily many input copies and unboundedly complex operations; however, the available resources are constrained in reality. This motivates the study of entanglement theory with limited resources. One of its central questions is which quantities c...

Takeru Utsumi, Jacopo Rizzo, Ryuji Takagi et al. · 1 citation

Preprint Sep 2026

When Classical Correlations Certify Entanglement Recovery

Entanglement and state distinguishability have long been central topics in quantum foundations. While each has developed into a rich subject in its own right, they can be connected through measurements in complementary bases. This connection provides insights into quantum and classical correlations and underlies many i...

Takeru Utsumi, Yota Tachibana, Y. Nakata et al. · 0 citations