Using a quantum work meter to test non-equilibrium fluctuation theorems
Work is an essential concept in classical thermodynamics, and in the quantum regime, where the notion of a trajectory is not available, its definition is not trivial. For driven (but otherwise isolated) quantum systems, work can be defined as a random variable, associated with the change in the inte...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20411723_v8_n1_p_Cerisola http://hdl.handle.net/20.500.12110/paper_20411723_v8_n1_p_Cerisola |
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paper:paper_20411723_v8_n1_p_Cerisola2023-06-08T16:33:08Z Using a quantum work meter to test non-equilibrium fluctuation theorems equilibrium probability quantum mechanics thermodynamics cold stress identity probability thermodynamics validity Work is an essential concept in classical thermodynamics, and in the quantum regime, where the notion of a trajectory is not available, its definition is not trivial. For driven (but otherwise isolated) quantum systems, work can be defined as a random variable, associated with the change in the internal energy. The probability for the different values of work captures essential information describing the behaviour of the system, both in and out of thermal equilibrium. In fact, the work probability distribution is at the core of "fluctuation theorems" in quantum thermodynamics. Here we present the design and implementation of a quantum work meter operating on an ensemble of cold atoms, which are controlled by an atom chip. Our device not only directly measures work but also directly samples its probability distribution. We demonstrate the operation of this new tool and use it to verify the validity of the quantum Jarzynksi identity. © 2017 The Author(s). 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20411723_v8_n1_p_Cerisola http://hdl.handle.net/20.500.12110/paper_20411723_v8_n1_p_Cerisola |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
equilibrium probability quantum mechanics thermodynamics cold stress identity probability thermodynamics validity |
| spellingShingle |
equilibrium probability quantum mechanics thermodynamics cold stress identity probability thermodynamics validity Using a quantum work meter to test non-equilibrium fluctuation theorems |
| topic_facet |
equilibrium probability quantum mechanics thermodynamics cold stress identity probability thermodynamics validity |
| description |
Work is an essential concept in classical thermodynamics, and in the quantum regime, where the notion of a trajectory is not available, its definition is not trivial. For driven (but otherwise isolated) quantum systems, work can be defined as a random variable, associated with the change in the internal energy. The probability for the different values of work captures essential information describing the behaviour of the system, both in and out of thermal equilibrium. In fact, the work probability distribution is at the core of "fluctuation theorems" in quantum thermodynamics. Here we present the design and implementation of a quantum work meter operating on an ensemble of cold atoms, which are controlled by an atom chip. Our device not only directly measures work but also directly samples its probability distribution. We demonstrate the operation of this new tool and use it to verify the validity of the quantum Jarzynksi identity. © 2017 The Author(s). |
| title |
Using a quantum work meter to test non-equilibrium fluctuation theorems |
| title_short |
Using a quantum work meter to test non-equilibrium fluctuation theorems |
| title_full |
Using a quantum work meter to test non-equilibrium fluctuation theorems |
| title_fullStr |
Using a quantum work meter to test non-equilibrium fluctuation theorems |
| title_full_unstemmed |
Using a quantum work meter to test non-equilibrium fluctuation theorems |
| title_sort |
using a quantum work meter to test non-equilibrium fluctuation theorems |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20411723_v8_n1_p_Cerisola http://hdl.handle.net/20.500.12110/paper_20411723_v8_n1_p_Cerisola |
| _version_ |
1768544295264976896 |