Author(s): J. Tokimoto, S. Ohmura, A. Takahashi, K. Iwano, and H. OkamotoWe propose a new approach to extract the important degrees of freedom in quantum dynamics induced by an external stimulus. We calculate the coefficient matrix numerically, where the i−l element of the matrix is the coefficient of the lth basis state at the ith discretized time...

Author(s): Mohammad H. A. Badarneh, Grzegorz J. Kwiatkowski, and Pavel F. BessarabEnergy-efficient switching of nanoscale magnets requires application of a time-varying magnetic field characterized by microwave frequency. At finite temperatures, even weak thermal fluctuations induce perturbations in the magnetization that can accumulate in time, disrupt...

Author(s): Alexander C. Tyner, Shouvik Sur, Qunfei Zhou, Danilo Puggioni, Pierre Darancet, James M. Rondinelli, and Pallab GoswamiBand topology of anomalous quantum Hall insulators can be precisely addressed by computing the Chern numbers of constituent nondegenerate bands, describing the presence of quantized, Abelian Berry flux through the two-dimensional...

Author(s): Maurits S. J. Tepaske, David J. Luitz, and Dominik HahnThe time evolution of quantum many-body systems is one of the most promising applications for near-term quantum computers. However, the utility of current quantum devices is strongly hampered by the proliferation of hardware errors. The minimization of the circuit depth for a given quantum...

Author(s): YunHeng Chen, Lachlan Oberg, Johannes Flick, Artur Lozovoi, Carlos A. Meriles, and Marcus W. DohertyA significant hurdle in developing high-performance semiconductor quantum technologies utilizing deep defects is related to charge dynamics. Unfortunately, progress in modeling their charge dynamics has been hindered over recent decades due...

Author(s): Chao Deng, Min Wang, Hongyu Huang, Ming Xu, Wendi Zhao, Mingyang Du, Hao Song, and Tian CuiThe pursuit of high-Tc superconductors has remained a long-thought goal within the field of condensed-matter physics and material science. Motivated by the recent experimental synthesis of SrH22 and HfH14, here we use ab initio methods to study the...