Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Uchiyama, Chikako"'
Autor:
Uchiyama, Chikako
In various fields from quantum physics to biology, the open quantum dynamics of a system consisting of interacting subsystems emphasizes its fundamental functionality. The local approach, deriving a dissipator in a master equation by ignoring the int
Externí odkaz:
http://arxiv.org/abs/2303.02926
A unified thermodynamic formalism describing the efficiency of learning is proposed. First, we derive an inequality, which is more strength than Clausius's inequality, revealing the lower bound of the entropy-production rate of a subsystem. Second, t
Externí odkaz:
http://arxiv.org/abs/2209.08096
Autor:
Hashimoto, Kazunari, Uchiyama, Chikako
Publikováno v:
Entropy 2022, 24(4), 548
Quantum Landauer's principle provides a fundamental lower bound for energy dissipation occurred with information erasure in the quantum regime. While most studies have related the entropy reduction incorporated with the erasure to the lower bound~(en
Externí odkaz:
http://arxiv.org/abs/2203.16724
We proposed the finite-time cycle model of a measurement-based quantum cooler, where invasive measurement provides the power to drive the cooling cycle. Such a cooler may be regarded as an alternative thought experiment of Mawell's demon. The measure
Externí odkaz:
http://arxiv.org/abs/2111.12467
Publikováno v:
Phys. Rev. Research 3, 023078 (2021)
We study a limit cycle of a quantum Otto engine whose each cycle consists of two finite-time quantum isochoric (heating or cooling) processes and two quantum adiabatic work-extracting processes. Considering a two-level system as a working substance t
Externí odkaz:
http://arxiv.org/abs/2006.13586
Publikováno v:
Phys. Rev. A 101, 052114 (2020)
Landauer's principle provides a perspective on the physical meaning of information as well as on the minimum working cost of information processing. Whereas most studies have related the decrease in entropy during a computationally irreversible proce
Externí odkaz:
http://arxiv.org/abs/2006.09960
Publikováno v:
Phys. Rev. B 99, 205304 (2019)
The miniaturization of spintronic devices, specifically, nanoscale devices employing spintronics, has attracted intensive attention from a scientific as well as engineering perspective. In this paper, we study non-Markovian effect on spin pumping to
Externí odkaz:
http://arxiv.org/abs/1901.04965
Publikováno v:
npj Quantum Information, volume 4, Article number: 33 (2018)
Transport phenomena are ubiquitous throughout the science, engineering and technology disciplines as it concerns energy, mass, charge and information exchange between systems. In particular, energy transport in the nanoscale regime has attracted sign
Externí odkaz:
http://arxiv.org/abs/1711.01025
Publikováno v:
Phys. Rev. B 96, 064439 (2017)
Using a minimum model consisting of a magnetic quantum dot and an electron lead, we investigate spin pumping by its precessing magnetization. Focusing on the "adiabaticity", which is quantified using a comparison between the frequency of precession a
Externí odkaz:
http://arxiv.org/abs/1706.00583
Autor:
Fu, Tong, Wang, Youlin, Chen, Jingyi, Du, Jianying, Chen, Jincan, Uchiyama, Chikako, Su, Shanhe
Publikováno v:
Journal of Applied Physics; 7/14/2023, Vol. 134 Issue 2, p1-8, 8p
