Towards a Quantum Network Using High Frequency Mechanical Oscillators

Synopsis

In recent years, long lifetime and long coherence time have been measured in confined high-frequency mechanical modes, making them an attractive choice for quantum memories. Optomechanical cavities, due to the native operation at telecom wavelength, are then an ideal candidate for quantum repeaters in a DLCZ scheme. We will present work in this direction (optomechanical quantum teleportation), current limitations, and possible future developments.

Moreover, phonons, thanks to the coupling to several systems, can be used to connect heterogeneous devices and to route quantum information on-chip. Having a toolbox to coherently manipulate the information encoded in the phonons can open the doors to phononic circuits. We will show a phononic waveguide that is used to route quantum information on-chip and discuss possible future developments.

Lastly, we will discuss some recent measurements on the frequency diffusion of mechanical modes in nanodevices and how this can affect the coherence time of single and multi-mode devices.

Short bio: I am currently working in Simon Groeblacher’s lab in TU Delft, exploring and developing high frequency mechanical resonators for quantum communication purposes. I am focused on connecting remote devices through a mechanical intermediary, both in the form of a quantum memory or as a direct quantum bus. In between hours in the lab and the cleanroom nano fabricating the samples, I enjoy climbing and cooking.