Fully coupled hybrid cavity optomechanics: Quantum interferences and correlations

Abstract

We present a quantum theory for a fully coupled hybrid optomechanical system where all mutual couplings between a two-level atom, a confined photon mode and a mechanical oscillator mode are considered. In such a configuration, new quantum interference effects and correlations arise due to the interplay and competition between the different physical interactions. We present an analytical diagonalization of the related fully coupled Hamiltonian, showing the nature and energy spectra of the tripartite dressed excitations. We determine the driven-dissipative dynamics of such hybrid systems and study phonon blockade effects under resonant excitation. We also study the statistical properties of the photon emission obtained under incoherent pumping of the two-level atom, which is particularly relevant for experiments with solid-state two-level emitters.

Indirect strong coupling regime between a quantum emitter and a cavity mediated by a mechanical resonator

“…The parameters g cm and g am are the optomechanical coupling strength and the atom-phonon coupling strength, respectively. Figure 1: Sketch of the hybrid cQED-optomechanical system [25]. Linear coupling is assumed between the nanocavity and the mechanical resonator, and also between the single-exciton quantum dot and the mechanical resonator.…”

Manipulation and enhancement of asymmetric steering via interference effects induced by closed-loop coupling

“…Finally, we have also demonstrated the opposite interference patterns of entanglement and steering between other pair of modes in the loop, indicating the monogamy constraints for distributing quantum correlations among multipartite. It is worth noticing that new quantum interference effects arising from a closed coupling loop have been recently applied to study optomechanical interferences and phonon correlations [47,48], the phase effects on phonon blockade effects [47,49], the transduction bandwidth of a rf-to-optical transducer [50], and the optical nonreciprocal behavior [51][52][53][54] which has been experimentally implemented [55][56][57].…”

Quantum correlations between two cavity QED systems coupled by a mechanical resonator

“…Now, phononic modes of mechanical resonators could be considered to connect cQED nodes as an alternative to Send offprint requests to: a e-mail: jeramirezm@unal.edu.co the standard photonic channels. Most of the works so far consider that phononic modes modulate the energies of quantum emitters and cavities [20]. Beyond the dispersive regime, other coupling mechanisms have been explored such as linear coupling [21] or by mechanical variation of the Rabi coupling rate [22,23].…”