Back to Search
Start Over
Cooling a nanomechanical resonator by a triple quantum dot
- Source :
- EPL, 95 (2011) 40003
- Publication Year :
- 2012
-
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 $\Lambda$ 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.<br />Comment: 6 pages, 3 figures
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- EPL, 95 (2011) 40003
- Publication Type :
- Report
- Accession number :
- edsarx.1205.5882
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1209/0295-5075/95/40003