Lifetimes of highly excited atomic states

Abstract

We consider a highly excited atom in a good cavity strongly pumped by coherent light. We derive the autocorrelation function of the field emergent from the cavity. We show that the autocorrelation function can be expressed in terms of the atomic dissipation rate. In order to distinguish between the resonant and the non-resonant case, we introduce a parameter interpreted as the measure of the relative detuning between the pump laser and the excited atom frequency. By selecting the parameter time, we determine the lifetime of the excited atom. This method constitutes an interesting alternative for internal atomic parameter determination.

Quantum Coherence and Total Phase in Semiconductor Microcavities for Multi-Photon Excitation

“…The last term describes the external driving where and design respectively the amplitude and frequency of the coherent field. In this work, we focus on the resonant condition without nonlinear dissipations [ 57 ], and the master equation is expressed as [ 58 , 59 , 60 , 61 , 62 ] …”

“…The second approximation is to limit the number of excitations inside the cavity. In the WER, we can write the wave function as a superposition of product of excitonic and photonic states and retain up to four states, which can be justified by the excitation of the cavity [ 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ] …”

Entanglement Sudden Death and Sudden Birth in Semiconductor Microcavities

“…It is shown that these effects give rise to small corrections as compared to the nonlinear exciton-exciton scattering [41,50,51]. Furthermore, we assume that the thermal reservoir is at the T = 0 and we neglect the nonlinear dissipations [52], then the master equation can be written as [53][54][55][56][57] …”

Bunching and Antibunching in Cavity QED

“…In this section, we explore the case of highly excited Rydberg atom. In the previous work, we have shown that the expression of the autocorrelation function in the strong coupling regime is: [25] g (2) (τ ) = 1 + µ e −τ /τpop − (µ + 1) cos(Ωτ ) e −τ /τ coh , (14) where µ is a parameter given by: µ…”