Two PhD candidates in integrated photonics with disordered materials for classical and quantum devices

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Two PhD candidates in integrated photonics with disordered materials for

classical and quantum devices

100%, Zurich, fixed-term

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The Optical Nanomaterial Laboratory at the Physics Department of ETH Zurich is looking for Two PhD candidates in integrated photonics with disordered materials for classical and quantum devices.

The preferred starting date is between September 2023 and February 2024.

Nonlinear materials used in telecommunication, laser and quantum applications are typically bulk metal-oxides single crystals. With this project, we want to establish a new family of nonlinear materials based on polycrystalline bottom- up assemblies to produce thin films and nano- to microstructures that can become agile photonic integrated chips (PIC) for classical and quantum devices.

Project background

These two PhD projects aim to realize bottom-up polycrystalline nonlinear assemblies of metal-oxides for PICs, which in fabrication complexity and functionalities will outperform devices constructed from bulk crystals or top- down thin films. Different kinds of bottom-up wet chemistry of metal-oxide nanocrystals will be explored starting from barium titanate and lithium niobate materials that are transparent from ultraviolet to mid-infrared, strongly nonlinear and electro-optic.

Job description

We will develop photonic assemblies made of nanocrystals or sol-gel chemistry to reach refractive indices and electro-optic strength comparable to bulk crystals. Such ductile materials will be then soft nanoimprinted with reusable large surface area polymer molds for structuring the PICs without the etching complexity of metal-oxides. The counter-intuitive perception that nonlinear optical effects are limited in random assemblies of nanocrystals gives rise to puzzling questions that will be investigated. Can those assemblies be used as a testbed to demonstrate strong light confinement and efficient frequency conversion without phase matching? Is there a method to control the orientation of the crystals during the fabrication and to design entangled photon sources? Can we build scalable and efficient PICs for classical and quantum applications?

Your profile

You should be creative, well-organized, and highly motivated to work in a photonic laboratory with emphasis either on material assembly, nanofabrication and characterization of PICs or on the fundamental study of multiple scattering in disordered materials for integrated devices.

You should have a bachelor and master's degree in physics, electrical/quantum engineering, optics, material sciences, or related fields and be interested in working in an interdisciplinary environment at the interface of nanotechnology, photonics, physics, material and quantum sciences.

Your workplace Your workplace We offer

ETH Zurich is a family-friendly employer with excellent working conditions. You can look forward to an exciting working environment, cultural diversity and attractive offers and benefits.

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We value diversity

In line with our values, ETH Zurich encourages an inclusive culture. We promote equality of opportunity, value diversity and nurture a working and learning environment in which the rights and dignity of all our staff and students are respected. Visit our Equal Opportunities and Diversity website to find out how we ensure a fair and open environment that allows everyone to grow and flourish.

Curious? So are we.

We look forward to receiving your application online including the following documents by June 15th 2023:

a cover letter,

CV,

transcripts of Bachelor's and Master's degrees, and contact information of two referees.

Please note that we exclusively accept applications submitted through our online application portal. Applications via email or postal services will not be considered.

To get to know the group of Rachel Grange, please visit our website www. ong.ethz.ch.

About ETH Zürich

ETH Zurich is one of the world's leading universities specialising in science and technology. We are renowned for our excellent education, cutting-edge fundamental research and direct transfer of new knowledge into society. Over 30,000 people from more than 120 countries find our university to be a place that promotes independent thinking and an environment that inspires excellence. Located in the heart of Europe, yet forging connections all over the world, we work together to develop solutions for the global challenges of today and tomorrow.

Curious? So are we.

We look forward to receiving your application online including the following documents by June 15th 2023:

a cover letter,

CV,

transcripts of Bachelor's and Master's degrees, and contact information of two referees.

Please note that we exclusively accept applications submitted through our online application portal. Applications via email or postal services will not be considered.

To get to know the group of Rachel Grange, please visit our website www. ong.ethz.ch.

Apply online now

About ETH Zürich

ETH Zurich is one of the world's leading universities specialising in science and technology. We are renowned for our excellent education, cutting-edge fundamental research and direct transfer of new knowledge into society. Over 30,000 people from more than 120 countries find our university to be a place that promotes independent thinking and an environment that inspires excellence. Located in the heart of Europe, yet forging connections all over the world, we work together to develop solutions for the global challenges of today and tomorrow.

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