PhD position on Hybrid Ion trap technology

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QITE team Matériaux et Phénomènes Quantiques Lab, Paris
1 September, 2021


Laboratoire MPQ, Université de Paris
10, rue A Domon et L Duquet
Paris 75013
Phone: +33(0)157276217

Hybrid ion trapping devices: surface ion traps with integrated waveguides for steering and collecting light

Laser cooled trapped ions are among the few physical systems in which quantum logic operations have been demonstrated (e.g. 2012 Nobel Prize for Physics awarded to David Wineland and Serge Haroche).
First demonstrations of quantum logic operations have been obtained using macroscopically sized ion traps (tens of millimeters), but miniaturized devices are now routinely fabricated in laboratory cleanrooms.

Our group develops a research project, in collaboration with NTU University Singapore, in which cmos factory compatible ion trap arrays are designed and fabricated that will integrate photonic waveguides for photon steering. This strategy will also allow us to address the important challenge of interconnection between quantum- processor sub-units opening the way to “on chip” ion-photon entanglement.

We already fabricated in a large-scale facility and tested [1] preliminary versions of single traps connected with a TSV (Through Silicon Via) to an interposer. The aim of the project is then to move towards hybrid traps and then arrays of such traps.

During the PhD project we will study this new family of devices that integrate photonic waveguides for laser steering to the ion and/or emitted photons collection. In particular we will address the creation of a quantum interface between matter (the ion) and photons that will be entirely based on integrated and miniaturized devices.

[1] P. Zhao, J.-P. Likforman, H. Y. Li, J. Tao, T. Henner, Y. D. Lim, W. W. Seit, C. S. Tan, and L. Guidoni, Appl. Phys. Lett. 118, 124003 (2021).