Zobrazeno 1 - 10
of 355
pro vyhledávání: '"Ito, Kosuke"'
Channel simulation using coherence, which refers to realizing a target channel with coherent states and free operations, is a fundamental problem in quantum resource theory. The limitations of the accuracy of deterministic channel simulation motivate
Externí odkaz:
http://arxiv.org/abs/2404.06775
Autor:
Ito, Kosuke, Fujii, Keisuke
We introduce SantaQlaus, a resource-efficient optimization algorithm tailored for variational quantum algorithms (VQAs), including applications in the variational quantum eigensolver (VQE) and quantum machine learning (QML). Classical optimization st
Externí odkaz:
http://arxiv.org/abs/2312.15791
Autor:
Ichikawa, Tsubasa, Hakoshima, Hideaki, Inui, Koji, Ito, Kosuke, Matsuda, Ryo, Mitarai, Kosuke, Miyamoto, Koichi, Mizukami, Wataru, Mizuta, Kaoru, Mori, Toshio, Nakano, Yuichiro, Nakayama, Akimoto, Okada, Ken N., Sugimoto, Takanori, Takahira, Souichi, Takemori, Nayuta, Tsukano, Satoyuki, Ueda, Hiroshi, Watanabe, Ryo, Yoshida, Yuichiro, Fujii, Keisuke
Publikováno v:
Nat. Rev. Phys. 6, 345 (2024)
Quantum computers (QCs), which work based on the law of quantum mechanics, are expected to be faster than classical computers in several computational tasks such as prime factoring and simulation of quantum many-body systems. In the last decade, rese
Externí odkaz:
http://arxiv.org/abs/2307.16130
Autor:
Ito, Kosuke
Efficient classical optimizers are crucial in practical implementations of Variational Quantum Algorithms (VQAs). In particular, to make Stochastic Gradient Descent (SGD) resource efficient, adaptive strategies have been proposed to determine the num
Externí odkaz:
http://arxiv.org/abs/2302.04422
Autor:
Fujita, Shohei, Hagiwara, Akifumi, Kimura, Koichiro, Taniguchi, Yo, Ito, Kosuke, Nagao, Hisako, Takizawa, Masahiro, Uchida, Wataru, Kamagata, Koji, Tateishi, Ukihide, Aoki, Shigeki
Publikováno v:
In Magnetic Resonance Imaging October 2024 112:100-106
Publikováno v:
In Gas Science and Engineering June 2024 126
Publikováno v:
Phys. Rev. Research 5, 023025 (2023)
Variational quantum algorithms (VQAs) are expected to become a practical application of near-term noisy quantum computers. Although the effect of the noise crucially determines whether a VQA works or not, the heuristic nature of VQAs makes it difficu
Externí odkaz:
http://arxiv.org/abs/2106.03390
Autor:
Ito, Kosuke, Watanabe, Gentaro
As a model of so-called quantum battery (QB), quantum degrees of freedom as energy storage, we study a charging protocol of a many-body QB consisting of $N$ two-level systems (TLSs) using quantum heat engines (QHEs). We focus on the collective enhanc
Externí odkaz:
http://arxiv.org/abs/2008.07089
We study the higher-order statistical properties of the Carnot cycle whose working substance consists of a small, classical system. We show that the ratio between the fluctuations of work and heat is given by an universal form depending solely on the
Externí odkaz:
http://arxiv.org/abs/1910.08096
Autor:
Holbach, Heather M., Bousquet, Olivier, Bucci, Lisa, Chang, Paul, Cione, Joe, Ditchek, Sarah, Doyle, Jim, Duvel, Jean-Philippe, Elston, Jack, Goni, Gustavo, Hon, Kai Kwong, Ito, Kosuke, Jelenak, Zorana, Lei, Xiaotu, Lumpkin, Rick, McMahon, Clive R., Reason, Christopher, Sanabia, Elizabeth, Shay, Lynn Keith, Sippel, Jason A., Sushko, Andrey, Tang, Jie, Tsuboki, Kazuhisa, Yamada, Hiroyuki, Zawislak, Jonathan, Zhang, Jun A.
Publikováno v:
In Tropical Cyclone Research and Review June 2023 12(2):81-99