Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25932
Title: Cooling a nanomechanical resonator by a triple quantum dot
Authors: Li, ZZ
Ouyang, SH
Lam, CH 
You, JQ
Issue Date: 2011
Publisher: EDP Sciences
Source: EPL : a letters journal exploring the frontiers of physics, 2011, v. 95, no. 4, 40003 How to cite?
Journal: EPL : a letters journal exploring the frontiers of physics 
Abstract: We propose an approach for achieving ground-state cooling of a nanomechanical resonator (NAMR) capacitively coupled to a triple quantum dot (TQD). This TQD is an electronic analog of a three-level atom in Λ configuration which allows an electron to enter it via lower-energy states and to exit only from a higher-energy state. By tuning the degeneracy of the two lower-energy states in the TQD, an electron can be trapped in a dark state caused by destructive quantum interference between the two tunneling pathways to the higher-energy state. Therefore, ground-state cooling of an NAMR can be achieved when electrons absorb readily and repeatedly energy quanta from the NAMR for excitations.
URI: http://hdl.handle.net/10397/25932
ISSN: 0295-5075
EISSN: 1286-4854
DOI: 10.1209/0295-5075/95/40003
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