Phd (M/W) : Photonic Crystal Nanostructures For Strong Atom-Photon Interaction In A Quantum Network

7 Sep 2023

Job Information

Organisation/Company

CNRS

Department

Centre de Nanosciences et de Nanotechnologies

Research Field

Physics

Researcher Profile

First Stage Researcher (R1)

Country

France

Application Deadline

27 Sep 2023 - 23:59 (UTC)

Type of Contract

Temporary

Job Status

Full-time

Hours Per Week

35

Offer Starting Date

1 Oct 2023

Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme

Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

Light-matter interaction at the single-quanta level is the keystone of quantum information science and technology. However, single quanta are generally weakly interacting and enhancing this coupling has been the driving force for a large community. Integrated photonic nanostructures appear as a promising avenue for tailoring light-matter interaction by engineering the emitter environment. Modern nanofabrication techniques have indeed enabled the design of solid-state systems with embedded emitters, such as quantum dots in photonic crystal waveguides or in nanocavities with high-quality factors, leading to Quantum Nanophotonics. In this context, we explore the waveguide QED paradigm by trapping atoms close to photonic crystal waveguides exhibiting slowly propagating modes, allowing for strong atom-photon interaction without cavities.

Exploration of the waveguide Quantum Electrodynamics (QED) paradigm by trapping atoms close to photonic crystal waveguides exhibiting slowly propagating modes. This allows for strong atom-photon coupling without a cavity, engineered collective response in a mesoscopic ensemble of atoms, and for strong atom-atom interaction mediated by the slow mode. This approach will enable new capabilities for quantum information networks, ranging from a single photon transistor to photonic quantum gates as well as quantum simulation protocols.

The main objective of the PHD is to pursue the work on this topic started few years ago in developing a novel nanophotonic platform compatible with Rb atoms and make it available to investigate waveguide QED activities in collaboration with Julien Laurat's team at LKB, Sorbonne University. Over the past years, we have developed a nanofabrication process dedicated to nanostructures compatible with Rb atoms having an optical transition at 780 nm. During his/her PhD, the candidate will have to work on the optimization of photonic-crystal-based nanostructures seeking for the best design to reach the strong interaction regime and to propagate with minimum losses the different lasers for trapping the atoms in the vicinity of the nanostructures. The candidate will be involved in the nanofabrication process in the clean-room facility of C2N, taking benefit of the know-how acquired over the last years. The candidate will then participate to the optical experiments to characterize the performance of the fabricated nanophotonic structures and will collaborate with Julien Laurat's team, bringing first the nanostructures in the cold atoms environment and working then on the atomic experiment dedicated to the strong interaction of the cold Rb atoms with the optical modes propagating in the nanostructures.

Requirements

Research Field

Physics

Education Level

PhD or equivalent

Languages

FRENCH

Level

Basic

Research Field

Physics

Years of Research Experience

None

Additional Information

Website for additional job details

https: // emploi.cnrs.fr/Offres/Doctorant/UMR9001-KAMBEN-005/Default.aspx

Work Location(s)

Number of offers available

1

Company/Institute

Centre de Nanosciences et de Nanotechnologies

Country

France

City

PALAISEAU

Where to apply

Website

https: // emploi.cnrs.fr/Candidat/Offre/UMR9001-KAMBEN-005/Candidater.aspx

Contact

City

PALAISEAU

Website

https:// www. c2n.universite-paris-saclay.fr/fr/

STATUS: EXPIRED