Výsledky vyhledávání - "Yamada∫, Shogo"

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Pseudorandom Function-like States from Common Haar Unitary

Autor: Hhan, Minki, Yamada, Shogo

Recent active studies have demonstrated that cryptography without one-way functions (OWFs) could be possible in the quantum world. Many fundamental primitives that are natural quantum analogs of OWFs or pseudorandom generators (PRGs) have been introd

Externí odkaz: http://arxiv.org/abs/2411.03201

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Quantum Unpredictability

Autor: Morimae, Tomoyuki, Yamada, Shogo, Yamakawa, Takashi

Unpredictable functions (UPFs) play essential roles in classical cryptography, including message authentication codes (MACs) and digital signatures. In this paper, we introduce a quantum analog of UPFs, which we call unpredictable state generators (U

Externí odkaz: http://arxiv.org/abs/2405.04072

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Scaling-up Memristor Monte Carlo with magnetic domain-wall physics

Autor: Dalgaty, Thomas, Yamada, Shogo, Molnos, Anca, Kawasaki, Eiji, Mesquida, Thomas, Rummens, François, Shibata, Tatsuo, Urakawa, Yukihiro, Terasaki, Yukio, Sasaki, Tomoyuki, Duranton, Marc

By exploiting the intrinsic random nature of nanoscale devices, Memristor Monte Carlo (MMC) is a promising enabler of edge learning systems. However, due to multiple algorithmic and device-level limitations, existing demonstrations have been restrict

Externí odkaz: http://arxiv.org/abs/2312.02771

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Anomalous change in the de Haas-van Alphen oscillations of CeCoIn$_5$ at ultra-low temperatures

Autor: Shishido, Hiroaki, Yamada, Shogo, Sugii, Kaori, Shimozawa, Masaaki, Yanase, Youichi, Yamashita, Minoru

Publikováno v: Phys. Rev. Lett. 120, 177201 (2018)

We have performed de Haas-van Alphen (dHvA) measurements of the heavy-fermion superconductor CeCoIn$_5$ down to 2 mK above the upper critical field. We find that the dHvA amplitudes show an anomalous suppression, concomitantly with a shift of the dHv

Externí odkaz: http://arxiv.org/abs/1803.05142

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A variety of elastic anomalies in orbital-active nearly-itinerant cobalt vanadate spinel

Autor: Watanabe, Tadataka, Yamada, Shogo, Koborinai, Rui, Katsufuji, Takuro

Publikováno v: Phys. Rev. B 96, 014422 (2017)

We perform ultrasound velocity measurements on a single crystal of nearly-metallic spinel Co$_{1.21}$V$_{1.79}$O$_4$ which exhibits a ferrimagnetic phase transition at $T_C \sim$ 165 K. The experiments reveal a variety of elastic anomalies in not onl

Externí odkaz: http://arxiv.org/abs/1704.07537

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