Publication Date:
2013-10-05
Description:
Quantum physics predicts that there is a fundamental maximum heat conductance across a single transport channel and that this thermal conductance quantum, G(Q), is universal, independent of the type of particles carrying the heat. Such universality, combined with the relationship between heat and information, signals a general limit on information transfer. We report on the quantitative measurement of the quantum-limited heat flow for Fermi particles across a single electronic channel, using noise thermometry. The demonstrated agreement with the predicted G(Q) establishes experimentally this basic building block of quantum thermal transport. The achieved accuracy of below 10% opens access to many experiments involving the quantum manipulation of heat.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jezouin, S -- Parmentier, F D -- Anthore, A -- Gennser, U -- Cavanna, A -- Jin, Y -- Pierre, F -- New York, N.Y. -- Science. 2013 Nov 1;342(6158):601-4. doi: 10.1126/science.1241912. Epub 2013 Oct 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CNRS, Laboratoire de Photonique et de Nanostructures, UPR20, route de Nozay, 91460 Marcoussis, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24091707" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
