Pulsed quantum continuous-variable optoelectromechanical transducer

Abstract

We propose a setup allowing to entangle two directly non-interacting radiation modes applying four sequential pulsed quantum resonant interactions with a noisy vibrational mode of a mechanical oscillator which plays the role of the mediator. We analyze Gaussian entanglement of the radiation modes generated by the transducer and confirm that the noisy mechanical mode can mediate generation of entanglement. The entanglement, however, is limited if the interaction gains are not individually optimized. We prove the robustness of the transducer to optical losses and the influence of the mechanical bath and propose the ways to achieve maximal performance through the individual optimization.

Rapid mechanical squeezing with pulsed optomechanics

“…It is likely that numerically re-optimising the four pulse strengths could be used to compensate for some of the effects of decoherence, as demonstrated in previous proposals e.g. [41,42]. Other parameters such as the optical rotation angle θ and the ancilla squeezing angle φ could also be numerically adjusted.…”

Atom-Mechanical Hong-Ou-Mandel Interference

“…Pulsed operation brings a number of advantages, including working with modern tools of quantum optics [28] and, compared to a continuous-wave driving, a possibility to get rid of thermal decoherence by operating on shorter timescales. For the applications, it is advantageous to build a hybrid quantum nondemolition gate that allows to use geometric phase effects [29,30]. Quantum nondemolition gate is basic continuous-variable gate capable to build not only all up-toquadratic nonlinearities [31] but also higher-order nonlinearities [32].…”

Robust optomechanical state transfer under composite phase driving

“…Previous works propose diverse techniques to enhance optomechanical cooling, for example, by dynamically modifying the damping [26], using squeezed light [27][28][29][30], feedbackcontrolled light [31,32], or considering the effects of non-Markovian evolution [33]. These developments show that optomechanical effects allow control over quantum optical and mechanical states leading to exciting proposals to use these systems as transducers [34][35][36][37][38][39].…”