Postdoc in the Development of On-Chip Integrated QD-based Quantum Light Sources Operating in the Telecom C-band – DTU Electro

Are you seeking an exciting career opportunity in the cutting-edge field of nanofabrication for integrated quantum photonics? DTU Electro is looking for an enthusiastic and skilled postdoctoral researcher to join our team. You will contribute to the development of on-chip integrated highly efficient quantum light sources operating in the telecom C-band.
Would you like to advance integrated photonic circuits with quantum light sources operating in the telecom C-band? The Department of Electrical and Photonics Engineering (DTU Electro) at the Technical University of Denmark is seeking an enthusiastic and skilled postdoctoral researcher to join our team for the project QPIC1550, funded by the European Union. The primary objective of QPIC1550 is to create a universal and scalable platform operating at 1550 nm by integrating, for the first time together, quantum light sources and detectors onto SiN quantum photonic circuitry. This new platform has the potential to revolutionize quantum photonics by enabling the creation of on-demand single photons and entangled photon pairs with efficient single-photon detection. Critical to this platform is its compatibility with existing optical fiber networks, which makes this a cost-effective solution for quantum communication, computing, and quantum metrology applications. The aim is to demonstrate the flexibility of our QPIC platform in three different use cases: Quantum Key Distribution, Remote Quantum Computing, and Quantum Clock Synchronization experiments.

At DTU Electro, we are at the forefront of the epitaxial growth of quantum dots (QDs) operating in the telecom C-band and device nanofabrication for application in quantum information technology. As a postdoc, you will play a crucial role in advancing the development of deterministic on-chip quantum light sources operating at the telecom C-band, with applications in quantum computing, quantum sensing, and quantum communication. Building on previous results (for links to key results please see the end of the job posting), this research will be conducted within the framework of an exciting EU project, providing you with unique opportunities for collaboration and international exposure.

Responsibilities and qualifications
As a postdoc, you will be working closely with other members of the QPIC1550 team and the department and will be responsible for epitaxial growth, nanofabrication, and heterogeneous integration of QD-based devices. More specifically, this will include:

• Developing and applying new epitaxial methods of InAs QD growth in the InP-based material system with a focus on telecom C-band wavelengths.
• Characterization of epitaxial material using XRD, PL, SEM, and AFM
• Developing and applying new approaches to enable tuneability of QD-based devices in terms of wavelength and the energy fine structure splitting.
• Developing and implementing nanofabrication techniques for scalable fabrication and on-chip integration of highly efficient sources of single photons and entangled photon pairs.
• Collaborate with an interdisciplinary team to design, fabricate, and characterize QD-based quantum light sources.
• Publish research findings in top-tier scientific journals and present at international conferences.
• Assist in the supervision of graduate students and contribute to the mentorship of junior researchers.
• Participate in project-related activities and meetings.

As a formal qualification, you must hold a PhD degree (or equivalent).

We are looking for a postdoc with a strong background in condensed matter physics who has excelled in their studies and is interested in working at the forefront of a new research field. Experience in epitaxy /nanofabrication / quantum optics is an advantage. Strong problem-solving skills and the ability to work independently and as part of a team.

Excellent communication and technical writing skills in English are mandatory.

We offer
DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and academic freedom tempered by responsibility.

Salary and terms of employment
The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union.

The period of employment is two years. The position is full-time and open from the 1 January 2025 or as soon as possible thereafter.

You can read more about career paths at DTU here.

Further information
Further information may be obtained from Associate Prof. Elizaveta Semenova ([email protected] or Tel: +45 4525 6385). (Applications submitted by email will not be considered. Instead, you should use the online portal described below.)

You can read more about:

• The Department of Electrical and Photonics Engineering at www.electro.dtu.dk ;
• The European project QPIC1550 you can read at https://www.qpic1550-project.eu/;
• Take a virtual tour in DTU Nanolab cleanroom facility: https://my.matterport.com/show/?m=n7rBdnKvgxd

If you are applying from abroad, you may find useful information on working in Denmark and at DTU at DTU – Moving to Denmark.

Application procedure
Your complete online application must be submitted no later than 20 October 2024 (23:59 Danish time). Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply now", fill out the online application form, and attach all your materials in English in one PDF file. The file must include:

• Application (cover letter)
• CV
• Academic Diplomas (MSc/PhD – in English)
• List of publications
• Contact information for at least two professional references

Applications received after the deadline will not be considered.

All interested candidates irrespective of age, gender, disability, race, religion or ethnic background are encouraged to apply.

DTU Electro has more than 300 skilled researchers with competencies in electrical and photonics engineering. As one of Europe’s largest public research departments, DTU Electro covers a multitude of research disciplines within nanophotonics, lasers, quantum photonics, optical sensors, LEDs, photovoltaics, ultra-high speed optical transmission systems, bio-photonics, acoustics, power electronics, robotics, and autonomous systems.

Technology for people
DTU develops technology for people. With our international elite research and study programmes, we are helping to create a better world and to solve the global challenges formulated in the UN’s 17 Sustainable Development Goals. Hans Christian Ørsted founded DTU in 1829 with a clear mission to develop and create value using science and engineering to benefit society. That mission lives on today. DTU has 13,500 students and 6,000 employees. We work in an international atmosphere and have an inclusive, evolving, and informal working environment. DTU has campuses in all parts of Denmark and in Greenland, and we collaborate with the best universities around the world.

Links to previous results:

• Holewa, P., Vajner, D.A., Zięba-Ostój, E. …Semenova E. et al. High-throughput quantum photonic devices emitting indistinguishable photons in the telecom C-band. Nature Communications 15, 3358 (2024).
• Holewa, P.; Sakanas, A.; Gür, U. M.; Mrowiński, P.; Huck, A.; Wang, B.-Y.; Musiał, A.; Yvind, K.; Gregersen, N.; Syperek, M., Semenova E. Bright quantum dot single-photon emitters at telecom bands heterogeneously integrated on Si. ACS Photonics, 9, 2273–2279. (2022)
• Burakowski, M., Holewa, P., Mrowiński, P., Sakanas, A., Musiał, A., Sȩk, G., Yvind, K., Semenova, E., and Syperek, M., Heterogeneous integration of single InAs/InP quantum dots with the SOI chip using direct bonding, Opt. Express 32, 10874-10886 (2024)

Adresse:

Ørsteds Plads
2800 Kgs. Lyngby