Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Okubo, Tsuyoshi"'
Autor:
Sunada, Yoshiki, Kono, Shingo, Ilves, Jesper, Sugiyama, Takanori, Suzuki, Yasunari, Okubo, Tsuyoshi, Tamate, Shuhei, Tabuchi, Yutaka, Nakamura, Yasunobu
Entanglement among a large number of qubits is a crucial resource for many quantum algorithms. Such many-body states have been efficiently generated by entangling a chain of itinerant photonic qubits in the optical or microwave domain. However, it ha
Externí odkaz:
http://arxiv.org/abs/2410.03345
Based on the tensor tree network with the Born machine framework, we propose a general method for constructing a generative model by expressing the target distribution function as the quantum wave function amplitude represented by a tensor tree. The
Externí odkaz:
http://arxiv.org/abs/2408.10669
Autor:
Yamaguchi, Hironori, Okubo, Tsuyoshi, Matsuo, Akira, Kawakami, Takashi, Iwasaki, Yoshiki, Takahashi, Taiki, Hosokoshi, Yuko, Kindo, Koichi
Publikováno v:
Phys. Rev. B 109, L100404 (2024)
We introduce a model compound featuring a spin-1/2 frustrated square lattice partially coupled by spin-5/2. A significant magnetization plateau exceeding 60 T could be observed, indicating a quantum state formed by $S$ = 1/2 spins in the square latti
Externí odkaz:
http://arxiv.org/abs/2404.06767
Autor:
Mashiko, Tohru, Okubo, Tsuyoshi
Publikováno v:
Phys. Rev. Res. 6, 033110 (2024)
Besides the exactly solvable spin-1/2 Kitaev model, higher spin-$S$ ones, not exactly solvable, are promising playgrounds for researches on the quantum spin liquid as well. One of the main interests in higher spin-S cases is the interplay between the
Externí odkaz:
http://arxiv.org/abs/2403.11490
Autor:
Kato, Yasuyuki, Nasu, Joji, Sato, Masahiro, Okubo, Tsuyoshi, Misawa, Takahiro, Motome, Yukitoshi
Quantum entanglement in strongly correlated electron systems often leads to exotic elementary excitations. Quantum spin liquids (QSLs) provide a paradigmatic example, where the elementary excitations are described by fractional quasiparticles such as
Externí odkaz:
http://arxiv.org/abs/2401.13175
Theoretical understanding of the behavior of infinitely-wide neural networks has been rapidly developed for various architectures due to the celebrated mean-field theory. However, there is a lack of a clear, intuitive framework for extending our unde
Externí odkaz:
http://arxiv.org/abs/2307.02284
We propose a loop optimization algorithm based on nuclear norm regularization for tensor network. The key ingredient of this scheme is to introduce a rank penalty term proposed in the context of data processing. Compared to standard variational perio
Externí odkaz:
http://arxiv.org/abs/2306.17479
Publikováno v:
npj Quantum Information 4, 45 (2024)
The intensive pursuit for quantum advantage in terms of computational complexity has further led to a modernized crucial question: {\it When and how will quantum computers outperform classical computers?} The next milestone is undoubtedly the realiza
Externí odkaz:
http://arxiv.org/abs/2210.14109
Autor:
Okubo, Tsuyoshi, Kawashima, Naoki
Publikováno v:
J. Phys. Soc. Jpn. 92, 114701 (2023)
We study by large-scale Monte Carlo simulation the $RP^3$ model, which can be regarded as an effective low-energy model of a triangular lattice Heisenberg antiferromagnet. $Z_2$ vortices appear as elementary excitations in the triangular lattice Heis
Externí odkaz:
http://arxiv.org/abs/2112.15053
Autor:
Motoyama, Yuichi, Okubo, Tsuyoshi, Yoshimi, Kazuyoshi, Morita, Satoshi, Kato, Takeo, Kawashima, Naoki
Publikováno v:
Computer Physics Communications 279, 108437 (2022)
TeNeS (Tensor Network Solver) is a free/libre open-source software program package for calculating two-dimensional many-body quantum states based on the tensor network method and the corner transfer matrix renormalization group (CTMRG) method. This p
Externí odkaz:
http://arxiv.org/abs/2112.13184