+ Site Statistics

+ Search Articles

+ PDF Full Text Service

How our service works

Request PDF Full Text

+ Follow Us

Follow on Facebook

Follow on Twitter

Follow on LinkedIn

+ Subscribe to Site Feeds

Most Shared

PDF Full Text

+ Translate

+ Recently Requested

Dephasing in quantum dots: quadratic coupling to acoustic phonons

Muljarov, E.A.; Zimmermann, R.

Physical Review Letters 93(23): 237401

2004

A microscopic theory of optical transitions in quantum dots with a carrier-phonon interaction is developed. Virtual transitions into higher confined states with acoustic phonon assistance add a quadratic phonon coupling to the standard linear one, thus extending the independent boson model. Summing infinitely many diagrams in the cumulant, a numerically exact solution for the interband polarization is found. Its full time dependence and the absorption line shape of the quantum dot are calculated. It is the quadratic interaction which gives rise to a temperature-dependent broadening of the zero-phonon line, calculated here for the first time in a consistent scheme.

Related references

**Geometrical spin dephasing in quantum dots**. Physical Review Letters 97(7): 076803, 2006

**Dephasing times in closed quantum dots**. Physical Review Letters 88(13): 136801, 2002

**Ultralong dephasing time in InGaAs quantum dots**. Physical Review Letters 87(15): 157401, 2001

**Ligands Slow Down Pure-Dephasing in Semiconductor Quantum Dots**. Acs Nano 9(9): 9106-9116, 2015