期刊论文

Li, Gao-xiang

英文

Journal of Physics B: Atomic, Molecular and Optical Physics

0953-4075

2011

44

19

195502

10.1088/0953-4075/44/19/195502

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [60878004, 11074087]; Ministry of Education [200805110002]; Natural Science Foundation of Hubei ProvinceNatural Science Foundation of Hubei Province [2010CDA075]; Nature Science Foundation of Wuhan City [201150530149]

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We present a scheme for ground-state cooling of a mechanical resonator coupled to two coupled quantum dots forming an effective Λ-type three-level structure and connected with two normal metal leads. Under certain conditions, the electron can be trapped in the lower one of the two dressed states produced by the interaction of the light field and the left dot with a two-level structure. The mechanical resonator is cooled by absorbing phonons when the electrons tunnel through the two coupled dots. Because the coupling resulting in the cooling (heating) processes is resonant (far-off-reson...