Radiatively limited dephasing in InAs quantum dots

by: W Langbein, P Borri, U Woggon, V Stavarache, D Reuter, AD Wieck

Physical Review B (Condensed Matter and Materials Physics), Vol. 70, No. 3. (2004)

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Abstract

We measure the dephasing time of the exciton ground-state transition in In1–xGaxAs quantum dots using a sensitive four-wave mixing technique. We find experimental evidence that the dephasing time is given only by the radiative lifetime at low temperatures. We demonstrate the tunability of the radiatively limited dephasing time from 400 ps up to 2 ns in a series of annealed In1–xGaxAs quantum dots with increasing quantum-confinement energy from 69 meV to 330 meV.

@article{citeulike:1830296, abstract = {We measure the dephasing time of the exciton ground-state transition in In1\&\#150;xGaxAs quantum dots using a sensitive four-wave mixing technique. We find experimental evidence that the dephasing time is given only by the radiative lifetime at low temperatures. We demonstrate the tunability of the radiatively limited dephasing time from 400\ \ ps up to 2\ \ ns in a series of annealed In1\&\#150;xGaxAs quantum dots with increasing quantum-confinement energy from 69\ \ meV\ \ to\ \ 330\ \ meV.}, author = {Langbein, W. and Borri, P. and Woggon, U. and Stavarache, V. and Reuter, D. and Wieck, A. D. }, citeulike-article-id = {1830296}, doi = {10.1103/PhysRevB.70.033301}, journal = {Physical Review B (Condensed Matter and Materials Physics)}, number = {3}, posted-at = {2007-10-27 22:46:34}, priority = {2}, publisher = {APS}, title = {Radiatively limited dephasing in InAs quantum dots}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRBMDO000070000003033301000001\&idtype=cvips\&gifs=yes}, volume = {70}, year = {2004} }

RIS record

TY - JOUR ID - citeulike:1830296 L3 - citeulike-article-id:1830296 TI - Radiatively limited dephasing in InAs quantum dots JF - Physical Review B (Condensed Matter and Materials Physics) VL - 70 IS - 3 PB - APS N2 - We measure the dephasing time of the exciton ground-state transition in In1xGaxAs quantum dots using a sensitive four-wave mixing technique. We find experimental evidence that the dephasing time is given only by the radiative lifetime at low temperatures. We demonstrate the tunability of the radiatively limited dephasing time from 400  ps up to 2  ns in a series of annealed In1xGaxAs quantum dots with increasing quantum-confinement energy from 69  meV  to  330  meV. AU - Langbein, W AU - Borri, P AU - Woggon, U AU - Stavarache, V AU - Reuter, D AU - Wieck, AD PY - 2004/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRBMDO000070000003033301000001&idtype=cvips&gifs=yes ER -

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