Symmetries and the Polarized Optical Spectra of Exciton Complexes in Quantum Dots

A systematic and simple theoretical approach is proposed to analyze true degeneracies and polarized decay patterns of exciton complexes in semiconductor quantum dots. The results provide reliable spectral signatures for efficient symmetry characterization, and predict original features for low C(2 nu) and high C(3 nu) symmetries. Excellent agreement with single quantum dot spectroscopy of real pyramidal InGaAs/AlGaAs quantum dots grown along [111] is demonstrated. The high sensitivity of biexciton quantum states to exact high symmetry can be turned into an efficient uninvasive postgrowth selection procedure for quantum entanglement applications.


Published in:
Physical Review Letters, 107, 12, 7403
Year:
2011
ISSN:
1079-7114
Keywords:
Laboratories:


Note: The status of this file is: EPFL only


 Record created 2011-10-14, last modified 2018-09-13

Publisher's version:
Download fulltextPDF
electronic supplemental material to main letter:
Download fulltextPDF
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)