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Entanglement Cost for Infinite-Dimensional Physical Systems

Hayata Yamasaki1,2, Kohdai Kuroiwa3,4, Patrick Hayden5

  • 1Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 Japan.

Communications in Mathematical Physics
|October 6, 2025
PubMed
Summary

We show that entanglement cost matches regularized entanglement of formation for infinite-dimensional quantum states with finite quantum entropy. This extends a key quantum information theory result to more complex systems.

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