Let us consider two quantum systems: system A and system B. Suppose that a classical information is encoded to quantum states of the system A and we distribute this information to both systems by making them interact with each other. We show that it is impossible to achieve this goal perfectly if the strength of interaction between the quantum systems is smaller than a quantity that is determined by noncommutativity between a Hamiltonian of the system A and the states (density operators) used for the information encoding. It is a consequence of a generalized Winger-Araki-Yanase theorem which enables us to treat conserved quantities other than additive ones.
Enhancing ground-state interaction strength of neutral atoms via Floquet stroboscopic dynamics
Northeast Normal University（东北师范大学）；Brescia University（布雷西亚大学）；European Laboratory for Nonlinear Spectroscopy & Istituto Nazionale di Ottica del CNR (CNR-INO)（欧洲非线性光谱学实验室与意大利国家光学研究所（CNR-INO））；NEST, Scuola Normale Superiore（NEST，比萨高等师范学院）；Institute of Quantum Science and Technology, Yanbian University（延边大学量子科学与技术研究院）
Influence of Rashba and Dresselhaus spin-orbit interactions of equal strengths on electron states in a circular quantum ring in the presence of a magnetic field
Quantization of Physical Interaction Strengths via Singular Moduli
State Key Laboratory for Precision Spectroscopy, ECNU, Shanghai（精密光谱学国家重点实验室，华东师范大学）；Dept. of Chemistry/Physics, University of California, Irvine（加州大学尔湾分校化学/物理系）；QuMorpheus Invitiative（QuMorpheus倡议）
Generalization of Brillouin theorem for the non-relativistic electronic Schrödinger equation in relation to coupling strength parameter, and its consequences in single determinant basis sets for configuration interactions
Beyond Integrability Preserving Renormalization-Group Protocol in Non-Hermitian Hamiltonians with Time-Dependent Interaction Strengths
Condensed Matter Theory Center, Department of Physics, University of Maryland（马里兰大学物理系凝聚态理论中心）；Department of Physics and Astronomy, University of California, Los Angeles（加州大学洛杉矶分校物理与天文学系）
Towards Nonperturbative Solution of Quantum Dynamics : A Hamiltonian Mean Field Approximation Scheme with Perturbation Theory for Arbitray Strength of Interaction
Realization of a Four Parameter Family of Generalized One-Dimensional Contact Interactions by Three Nearby Delta Potentials with Renormalized Strengths
