Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Hotta Masahiro"'
Autor:
Hotta, Masahiro, Ikeda, Kazuki
Quantum batteries are anticipated to achieve significant advancements in energy storage capacity. In classical batteries, the energy density at each subsystem reaches its maximum value, denoted as $E_C$, which is determined by dividing the maximum en
Externí odkaz:
http://arxiv.org/abs/2407.01832
Flying mirrors with appropriate trajectories have been recognized as an analog system that mimics black hole Hawking evaporation and have been widely investigated. It has recently been suggested that the partner mode of the analog Hawking radiation e
Externí odkaz:
http://arxiv.org/abs/2404.09446
Autor:
Hotta, Masahiro, Murk, Sebastian
Publikováno v:
Phys. Rev. A 109, 062224 (2024)
Leggett-Garg inequalities place bounds on the temporal correlations of a system based on the principles of macroscopic realism $\textit{per se}$ and noninvasive measurability. Their conventional formulation relies on the ensemble-averaged products of
Externí odkaz:
http://arxiv.org/abs/2312.16281
Autor:
Nambu, Yasusada, Hotta, Masahiro
Expanding edges in quantum Hall systems can become a simulator of quantum 1+1 dimensional expanding universes. In these systems, edge exciations are represented as a chiral scalar field in curved spacetimes. We investigate Hawking radiation and entan
Externí odkaz:
http://arxiv.org/abs/2301.09270
It is important to improve the accuracy of quantum measurements and operations both in engineering and fundamental physics. It is known, however, that the achievable accuracy of measurements and unitary operations are generally limited by conservatio
Externí odkaz:
http://arxiv.org/abs/2211.13433
We consider conceptual issues of deep learning (DL) for metric detectors using test particle geodesics in curved spacetimes. Advantages of DL metric detectors are emphasized from a view point of general coordinate transformations. Two given metrics (
Externí odkaz:
http://arxiv.org/abs/2206.03006
Expanding edge experiments are promising to open new physics windows of quantum Hall systems. In a static edge, the edge excitation, which is described by free fields decoupled with the bulk dynamics, is gapless, and the dynamics preserve conformal s
Externí odkaz:
http://arxiv.org/abs/2202.03731
Autor:
Hotta, Masahiro
Recently authors of a paper (arXiv:2105.04407) claim that quantum energy teleportation is unobservable due to a time-energy uncertainty relation. In this short note, I will point out that their argument is wrong. They misuse the uncertainty relation.
Externí odkaz:
http://arxiv.org/abs/2106.14680
Publikováno v:
Class. Quantum Grav. 38 225007 (2021)
Asymptotic symmetries of black hole spacetimes have received much attention as a possible origin of the Bekenstein-Hawking entropy in black hole thermodynamics. In general, it takes hard efforts to find appropriate asymptotic conditions on a metric a
Externí odkaz:
http://arxiv.org/abs/2012.14050
Publikováno v:
Phys. Rev. D 101, 085017 (2020)
We prove a nonperturbative duality concerning the dynamics of harmonic-oscillator-type Unruh-DeWitt detectors in curved spacetimes. Concretely, using the Takagi transformation we show that the action of a harmonic oscillator Unruh-DeWitt detector wit
Externí odkaz:
http://arxiv.org/abs/2002.00987