SD-25045 – PHD IN SPIN PHOTON ENTANGLEMENT GENERATION WITH COLOUR CENTRES IN SILICON CARBIDE

Description

Temporary contract | 14 months | Belval Are you passionate about research? So are we! Come and join us

How will you contribute?

You will be part of the LIST Materials Research and Technology department, where you will carry out your work in the Quantum Materials Group, led by Dr. Florian Kaiser.

Quantum technologies have the potential to revolutionise the world in many aspects. Quantum colour centres in in wide bandgap semiconductors have recently emerged as a promising platform, since they can incorporate quantum systems, which can be scaled up by industrial processing. Along these lines, we have recently shown that individual colour centres can be integrated into silicon carbide nanophotonic waveguides with little-to-no degradation of spin-optical coherences. These finding define the strategy for developing a scalable quantum technology architecture.

Our strategy is to establish use integrated colour centres for quantum communication tasks. Key here is to generate spin-photon entanglement. With this milestone demonstration, we strive to kickstart subsequent developments towards a quantum internet architecture.

The objective of this PhD thesis is to demonstrate spin-photon entanglement with single colour centres in silicon carbide. The initial part of this thesis comprises setting up our new optical cryostat platform, which is based on a combination of standard confocal microscopy, and time-bin interferometry. In the second step, you will benefit from our ongoing activities towards quantum photonic silicon carbide chips in which we generate colour centres in fibre-coupled waveguides.

You will determine the ideal pulsed excitation schemes for colour centres, considering spectral, temporal and polarization filtering. Subsequently, you will characterise the spin-photon entanglement quality depending on experimental parameters, such as speed and efficiency. This will give a holistic overview of the performance of these colour centres, such that they can be operated at the ideal parameter set for quantum internet tasks.

Profile

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Education

• MSc degree in physics, quantum technology, materials science, or electrical engineering

Experience and skills

Language skills

Starting date

Dès que possible