Real-time emission spectrum of a hybrid atom-optomechanical cavity

Abstract

We theoretically investigate the real-time emission spectrum of a two-level atom coupled to an optomechanical cavity (OMC). Using quantum trajectory approach we obtain the single-photon time-dependent spectrum in this hybrid system where the influence of a strong atom-cavity coupling and a strong optomechanical interaction are studied. We find a dressed state picture can explain the spectra by predicting the exact peak locations as well as the relative peak heights. In our analysis we also include the effect of mechanical losses (under weak mechanical damping limit) and single-photon loss through spontaneous emission from the two-level emitter.

Optical nonreciprocity and slow light in coupled spinning optomechanical resonators

“…In this context, cavity quantum optomechanics [26] is particularly a noticeable example due to its ability to host both nonreciprocity [27] and slow and fast * imranmajidmirza@gmail.com light propagation [28] in the same setup. More recently, hybrid atom-optomechanical systems (with single atoms, Bose-Einstein condensates and Kerr-type nonlinear medium coupled to optomechanical systems) [29][30][31][32] have made these studies more interesting due to coherent coupling among different degrees of freedom. The presence of atom-like system can lead to for instance improved ground state cooling of a mechanical oscillator [33], steady-state mechanical squeezing [34], appearance of novel correlations [35] and qubit-assisted enhancement of optomechanical interaction [36].…”

Quantum correlations from dynamically modulated optical nonlinear interactions

“…In cavity QED, optomechanical interaction [2] between a quantized cavity field and a movable mirror has shown modifications of optical spectrum and coherence properties [3][4][5] as well as generation and control of exotic quantum states of light and the mechanical motion [6][7][8]. In systems with single emitters coupled to modulated cavities, modification to spontaneous emission rates [9], emission spectra and emitter-cavity coupling dynamics has been studied and tested [10,11]. Cavities modulated by periodic signals have also been shown to be useful in optical isolation, non-reciprocity and topological photonics.…”

Time-dependent spectra of a three-level atom in the presence of electron shelving

“…The EW spectrum has been applied to study nontrivial dynamics of optical systems, for example: the effects of switching-on [15] and switching-off the laser [16], initial atomic coherence [17], and coherent population trapping [18] in resonance fluorescence; spontaneous emission (the first prediction of the Rabi doublet) [19], Dicke superradiance [20] and frequency-filtered photon correlations [21] in cavity QED. The EW spectrum has also been applied to the spontaneous emission in front of a moving mirror [22,23] and two-atom entanglement [24] in QED.…”