Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Gernot Schaller"'
Autor:
Gernot Schaller, Julian Ablaßmayer
Publikováno v:
Entropy, Vol 22, Iss 5, p 525 (2020)
We study the coarse-graining approach to derive a generator for the evolution of an open quantum system over a finite time interval. The approach does not require a secular approximation but nevertheless generally leads to a Lindblad–Gorini–Kossa
Externí odkaz:
https://doaj.org/article/617e2e0425b84c2ab52d4caedf948dcc
Autor:
Christopher W Wächtler, Philipp Strasberg, Sabine H L Klapp, Gernot Schaller, Christopher Jarzynski
Publikováno v:
New Journal of Physics, Vol 21, Iss 7, p 073009 (2019)
Self-oscillation is a phenomenon studied across many scientific disciplines, including the engineering of efficient heat engines and electric generators. We investigate the single electron shuttle, a model nano-scale system that exhibits a spontaneou
Externí odkaz:
https://doaj.org/article/0ce0e7ac02b74a5683b1b40a5719380b
Publikováno v:
New Journal of Physics, Vol 20, Iss 5, p 053063 (2018)
We combine the formalisms of Floquet theory and full counting statistics with a Markovian embedding strategy to access the dynamics and thermodynamics of a periodically driven thermal machine beyond the conventional Born–Markov approximation. The w
Externí odkaz:
https://doaj.org/article/1d02956dc85c45bcab616ecb6d7bf264
Publikováno v:
Physical Review X, Vol 7, Iss 2, p 021003 (2017)
We expand the standard thermodynamic framework of a system coupled to a thermal reservoir by considering a stream of independently prepared units repeatedly put into contact with the system. These units can be in any nonequilibrium state and interact
Externí odkaz:
https://doaj.org/article/cdfaab1f244c4634982eadb33eb777e1
Publikováno v:
New Journal of Physics, Vol 19, Iss 12, p 123034 (2017)
We demonstrate that a quantum absorption refrigerator (QAR) can be realized from the smallest quantum system, a qubit, by coupling it in a non-additive (strong) manner to three heat baths. This function is un-attainable for the qubit model under the
Externí odkaz:
https://doaj.org/article/64c203c9d0de42349d8385d0af8fdbe5
Publikováno v:
Entropy, Vol 18, Iss 12, p 447 (2016)
We establish quantum thermodynamics for open quantum systems weakly coupled to their reservoirs when the system exhibits degeneracies. The first and second law of thermodynamics are derived, as well as a finite-time fluctuation theorem for mechanical
Externí odkaz:
https://doaj.org/article/fa858fbd23ae420ca6dc02512d7a56b5
Publikováno v:
New Journal of Physics, Vol 18, Iss 7, p 073007 (2016)
We propose a method to study the thermodynamic behaviour of small systems beyond the weak coupling and Markovian approximation, which is different in spirit from conventional approaches. The idea is to redefine the system and environment such that th
Externí odkaz:
https://doaj.org/article/c0fb17d0154a49acabf0313efd8fd252
Publikováno v:
New Journal of Physics, Vol 16, Iss 12, p 125011 (2014)
We study the phenomenology of maximum-entropy meso-reservoirs, where we assume that their local thermal equilibrium state changes consistently with the heat transferred between the meso-reservoirs. Depending on heat and matter carrying capacities, th
Externí odkaz:
https://doaj.org/article/7d1938f9d03940c6b4dbeede0fbb03fa
Publikováno v:
New Journal of Physics, Vol 15, Iss 3, p 033032 (2013)
Using a simple quantum master equation approach, we calculate the full counting statistics of a single-electron transistor strongly coupled to vibrations. The full counting statistics contains both the statistics of integrated particle and energy cur
Externí odkaz:
https://doaj.org/article/45578c456b1c4ed3aac101f90223af8a
Publikováno v:
New Journal of Physics, Vol 14, Iss 12, p 123036 (2012)
We propose an all-electronic technique to manipulate and control interacting quantum systems by unitary single-jump feedback conditioned on the outcome of a capacitively coupled electrometer and, in particular, a single-electron transistor. We provid
Externí odkaz:
https://doaj.org/article/29ddb5dc3a124dc8863a9f54c114b98c