Spin-photon interfaces for quantum information (24-months)

Our group on Solid-State Quantum Optics, at the Center for Nanoscience & Nanotechnology, has developed a strong expertise in harnessing light-matter interaction at the most fundamental level. We develop crucial resources for optical quantum technologies, including high-performance single-photon sources [1]. In parallel, we have developed efficient interfaces between a single material qubit (the spin of a single charge in a semiconductor quantum dot (QD)) and single photonic qubits (the polarization of a single photon) [2]. We have also developed an important expertise in the understanding of the solid-state physics governing both the spin dyanmics and the QD-photon interactions [3]. Such spin-photon interfaces have long been envisioned, for example, to engineer photon-mediated operations between distant spins, as well as spin-mediated operations between single photons.

In this context, the main missions of the recruited post-doctoral researcher will be :

- To develop experiments using the interfaces as receivers of incoming photons, for the implementation of spin-photon and photon-photon logic gates.

- To use these same devices to generate exotic (non-gaussian) states of light.

- To implement techniques allowing to increase the spin qubit coherence, to allow entangling more and more photons through a single spin.

[1] Nature Photonics 10, 340 (2016); Nature Photonics 13, 803 (2019)

[2] Nature Communications 6, 6236 (2015); Nature Photonics 17, 582 (2023); Nature Communications 15, 598 (2024)

[3] Optica 4, 1326 (2017); Quantum Science & Technology 8, 025021 (2023); arXiv:2401.14976 (2024)

Additionnal information and application through the CNRS Job Portal: 

https://emploi.cnrs.fr/Offres/CDD/UMR9001-LOILAN-006/Default.aspx