Statistics of energy dissipation in a quantum dot operating in the cotunneling regime

Article

关键词: NEUTRAL-MODES;    COUNTING STATISTICS;    THERMOMETRY;   

DOI  :  10.1103/PhysRevB.90.201404

来源: SCIE

【 摘 要 】

At Coulomb blockade valleys inelastic cotunneling processes generate particle-hole excitations in quantum dots (QDs), and lead to energy dissipation. We have analyzed the probability distribution function (PDF) of energy dissipated in a QD due to such processes during a given time interval. We obtained analytically the cumulant generating function, and extracted the average, variance, and Fano factor. The latter diverges as T-3/(eV)(2) at bias eV smaller than the temperature T, and reaches the value 3eV /5 in the opposite limit. The PDF is further studied numerically. As expected, the Crooks fluctuation relation is not fulfilled by the PDF. Our results can be verified experimentally utilizing transport measurements of charge.

【 授权许可】

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