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quant-ph2026
Entanglement Generation Beyond Quantum Theory: From Product States to Popescu-Rohrlich Boxes
Shun Umekawa, Akihiro Hokkyo, Hayato Arai +1
Entanglement generation is a fundamental dynamical capability in quantum information science and underpins many quantum advantages. While quantum theory enables it through unitary…
quant-ph2026
Quantitative Wigner-Araki-Yanase Theorems for Unitary and Antiunitary Symmetries
Akihiro Hokkyo, Hiroyasu Tajima
Symmetry imposes fundamental constraints on quantum measurement and control. The Wigner-Araki-Yanase theorem and its quantitative extensions capture this restriction for continuous…
quant-ph2026
Exact Thermal Stabilizer Eigenstates at Infinite Temperature
Akihiro Hokkyo
Understanding how microscopic few-body interactions give rise to thermal behavior in isolated quantum many-body systems remains a central challenge in nonequilibrium statistical me…