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pro vyhledávání: '"Mohammady, M. Hamed"'
Feedback control and erasure protocols have often been considered as a model to embody Maxwell's Demon paradox and to study the interplay between thermodynamics and information processing. Such studies have led to the conclusion, now widely accepted
Externí odkaz:
http://arxiv.org/abs/2308.15558
Publikováno v:
Phys. Rev. A 107, 022406 (2023)
In the quantum regime, the third law of thermodynamics implies the unattainability of pure states. As shown recently, such unattainability implies that a unitary interaction between the measured system and a measuring apparatus can never implement an
Externí odkaz:
http://arxiv.org/abs/2209.06024
Autor:
Mohammady, M. Hamed
Publikováno v:
J. Phys. A: Math. Theor. 55 (2022) 505304
Thermal channels -- the free processes allowed in the resource theory of quantum thermodynamics -- are generalised to thermal instruments, which we interpret as implementing thermodynamically free quantum measurements; a Maxwellian demon using such m
Externí odkaz:
http://arxiv.org/abs/2205.10847
Publikováno v:
Quantum 7, 1033 (2023)
Measurement error and disturbance, in the presence of conservation laws, are analysed in general operational terms. We provide novel quantitative bounds demonstrating necessary conditions under which accurate or non-disturbing measurements can be ach
Externí odkaz:
http://arxiv.org/abs/2110.11705
Autor:
Mohammady, M. Hamed
Publikováno v:
Phys. Rev. A 104, 062202 (2021)
Quantum measurement is ultimately a physical process, resulting from an interaction between the measured system and a measuring apparatus. Considering the physical process of measurement within a thermodynamic context naturally raises the following q
Externí odkaz:
http://arxiv.org/abs/2103.15749
Autor:
Mohammady, M. Hamed
Publikováno v:
Phys. Rev. A 103, 042214 (2021)
A thermally isolated quantum system undergoes unitary evolution by interacting with an external work source. The two-point energy measurement (TPM) protocol defines the work exchanged between the system and the work source by performing ideal energy
Externí odkaz:
http://arxiv.org/abs/2012.09716
Publikováno v:
Phys. Rev. E 103, 052138 (2021)
In thermodynamics, entropy production and work quantify irreversibility and the consumption of useful energy, respectively, when a system is driven out of equilibrium. For quantum systems, these quantities can be identified at the stochastic level by
Externí odkaz:
http://arxiv.org/abs/2011.11589
Autor:
Mohammady, M. Hamed
The increase in average energy of a quantum system undergoing projective energy measurements is referred to as "quantum heat", which is always zero. In the framework of quantum stochastic thermodynamics, this is constructed as the average over the fl
Externí odkaz:
http://arxiv.org/abs/2006.07254
Publikováno v:
Phys. Rev. Lett. 126, 210603 (2021)
Thermodynamic Uncertainty Relations express a trade-off between precision, defined as the noise-to-signal ratio of a generic current, and the amount of associated entropy production. These results have deep consequences for autonomous heat engines op
Externí odkaz:
http://arxiv.org/abs/2006.07316
Publikováno v:
Phys. Rev. E 100, 012122 (2019)
In this paper we investigate the relationship between the efficiency of a cyclic quantum heat engine with the Hilbert space dimension of the thermal baths. By means of a general inequality, we show that the Carnot efficiency can be obtained only when
Externí odkaz:
http://arxiv.org/abs/1902.09378