Non-perturbative treatment of quantum dots coupled to light and phonons

✍ Scribed by A. Vagov; V.M. Axt; T. Kuhn

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 109 KB
• Volume: 17
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(02)00704-x

✦ Synopsis

We present an exact solution for the dynamics of a quantum dot (QD) coupled to phonons and excited by ultra-short light pulses. The solution is non-perturbative with respect to both carrier-phonon and carrier-light coupling, and accounts for an arbitrary number of pulses. Explicit expressions for the one and two pulse solutions are used to obtain the non-linear four-wave-mixing optical response by a single QD as well as by disordered QD arrays. Phonon emission by the excited QD is shown to be qualitatively di erent from that in the phonon assisted carrier relaxation.