The experimental demonstration of a spin quantum heat engine

Phys.org  December 30, 2019
An international team of researchers (Canada, Singapore, Brazil) successfully demonstrated that the proof-of-concept quantum heat engine is able to reach an efficiency for work extraction very close to its thermodynamic limit. They used a nuclear spin placed in a chloroform molecule and nuclear magnetic resonance techniques. They specifically manipulated the nuclear spin of a Carbon 13 isotope using a radiofrequency field, ultimately producing an Otto cycle (i.e., the thermodynamic cycle used in most common motors). They were able to characterize all energy fluctuations in work and heat, besides the irreversibility at the quantum scale…read more. TECHNICAL ARTICLE

Credit: Peterson et al.

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