Work extraction from single-mode thermal noise by measurements: How important is information?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F22%3A73615094" target="_blank" >RIV/61989592:15310/22:73615094 - isvavai.cz</a>
Result on the web
<a href="https://arxiv.org/pdf/2201.11567.pdf" target="_blank" >https://arxiv.org/pdf/2201.11567.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevE.106.054131" target="_blank" >10.1103/PhysRevE.106.054131</a>
Alternative languages
Result language
angličtina
Original language name
Work extraction from single-mode thermal noise by measurements: How important is information?
Original language description
Our goal in this article is to elucidate the rapport of work and information in the context of a minimal quantum-mechanical setup: a converter of heat input to work output, the input consisting of a single oscillator mode prepared in a hot thermal state along with a few much colder oscillator modes. The core issues we consider, taking account of the quantum nature of the setup, are as follows: (i) How and to what extent can information act as a work resource or, conversely, be redundant for work extraction? (ii) What is the optimal way of extracting work via information acquired by measurements? (iii) What is the bearing of information on the efficiency-power tradeoff achievable in such setups? We compare the efficiency of work extraction and the limitations of power in our minimal setup by different, generic, measurement strategies of the hot and cold modes. For each strategy, the rapport of work and information extraction is found and the cost of information erasure is allowed for. The possibilities of work extraction without information acquisition, via nonselective measurements, are also analyzed. Overall, we present, by generalizing a method based on optimized homodyning that we have recently proposed, the following insight: extraction of work by observation and feedforward that only measures a small fraction of the input is clearly advantageous to the conceivable alternatives. Our results may become the basis of a practical strategy of converting thermal noise to useful work in optical setups, such as coherent amplifiers of thermal light, as well as in their optomechanical and photovoltaic counterparts.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GA20-27994S" target="_blank" >GA20-27994S: Quantum information manipulation and thermodynamic processes with ultracold atoms</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICAL REVIEW E
ISSN
2470-0045
e-ISSN
2470-0053
Volume of the periodical
106
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
30
Pages from-to
"054131-1"-"054131-30"
UT code for WoS article
000891636900003
EID of the result in the Scopus database
2-s2.0-85142829383