Optomechanically induced transparency of x-rays via optical control

Future photonic quantum networks will require interfaces between different photon frequency regimes. Here we envisage for the first time an optomechanical system that bridges optical photons and x-rays with the aim to control the latter and exploit their unique properties regarding large momentum transfer, focusability, penetration, robustness and detection efficiency. The x-ray-optical interface system comprises of an optomechanical cavity and a movable microlever interacting with both an optical laser and with x-rays via resonant nuclear scattering. We develop a theoretical model for this system and show that x-ray absorption spectra of nuclei can be tuned optomechanically. In particular, our theoretical simulations predict optomechanically induced transparency of x-rays.