Evolution of the vacuum Rabi peaks in a detuned atom-cavity system

Abstract

We measure the transmission spectrum of an optical cavity filled with two-level atoms. For small intensities, the coupling between atoms and a single mode of the cavity splits the spectrum into two normal modes: the vacuum Rabi peaks. We gradually decouple the system in two ways and study the evolution of the vacuum Rabi peaks. First we lower the atom-cavity coupling frequency through its intensity dependence, showing that the peaks shift, deform, exhibit frequency hysteresis, and eventually merge into a single peak that approaches the empty cavity resonance. Second we detune the atoms and the cavity mode and observe an avoided crossing. The normal modes of the coupled system transform into the two resonances of the uncoupled system. We map out the transition region and find good agreement with theoretical predictions.

Intracavity Rydberg-atom electromagnetically induced transparency using a high-finesse optical cavity

“…5(a), we plot the positions of the three cavity transmission peaks as a function of the cavity field detuning, cav /2⇡, with the probe laser on resonance. The anti-crossing behavior shown in the plot is straightforward to explain, as in coupled two-level atom-cavity systems [57], it arises from the mixing of matter and field oscillations. The center peak position is not very sensitive to the cavity detuning due to the steep dispersion near the EIT resonance.…”

Third-order correlations in cavity quantum electrodynamics

“…There is a reduction of the noise below the standard quantum limit around 38 MHz. The squeezing is largest at a frequency slightly below the vacuum Rabi frequency 0 , possibly because we are operating in the region of renormalized frequency response [21]. The system is driven on resonance and the amount of squeezing is rather small compared to previous realizations where the system was driven off resonance [10][11][12].…”

“…Outside the weak field limit, saturation effects start to decouple the atoms and the field [4,21]. The intensity correlation measurements demonstrate that the non-classical features disappear at high driving intensities [5].…”

Optical control of resonant light transmission for an atom-cavity system

“…Such systems have been used to investigate bistability [12][13][14][15][16][17][18][19][20][21], switching [22], and nonlinear processes [23]. The participating atomic level system offers diversity in the phenomena observed with such systems.…”