- #1
Niles
- 1,866
- 0
Hi
In cQED and the Jaynes-Cummings model, three parameters are usually introduced which describe the atom-cavity system: The radiative lifetime γ, the cavity linewidth κ and the pure dephasing rate 1/T2. However I am not that familiar with the latter parameter.
Basically I guess it describes how fast the off-diagonal elements of the density matrix decay. But how do the coherences physically enter in the interaction between an atom and light? What is it that they do?Niles.
In cQED and the Jaynes-Cummings model, three parameters are usually introduced which describe the atom-cavity system: The radiative lifetime γ, the cavity linewidth κ and the pure dephasing rate 1/T2. However I am not that familiar with the latter parameter.
Basically I guess it describes how fast the off-diagonal elements of the density matrix decay. But how do the coherences physically enter in the interaction between an atom and light? What is it that they do?Niles.