2 citations · 3 across the 5 of their papers we have counts for
6 papers
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…
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…
Integrability from a single conservation law in quantum spin chains
Akihiro Hokkyo
We prove that, for translationally invariant quantum spin chains with finite-range interactions, the existence of a specific conservation law implies the presence of infinitely man…
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…
Absence of nontrivial local conserved quantities in the spin-1 bilinear-biquadratic chain and its anisotropic extensions
Akihiro Hokkyo, Mizuki Yamaguchi, Yuuya Chiba
We provide a complete classification of the integrability and nonintegrability of the spin-1 bilinear-biquadratic model with a uniaxial anisotropic field, which includes the Heisen…
Rigorous Test for Quantum Integrability and Nonintegrability
Akihiro Hokkyo
The integrability of a quantum many-body system, which is characterized by the presence or absence of local conserved quantities, drastically impacts the dynamics of isolated syste…