Postdoc in Error Correction for Continuous-Variable Quantum Key Distribution

mandag 27 jul 20

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Frist 10. august 2020
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Continuous-variable quantum key distribution (QKD) is a well established technology to distribute secret keys between two parties for data encryption. Within this position you will develop highly efficient error correction codes and integrate them into a QKD system. The project is interdisciplinary and will be carried out in a larger team comprising people from different academic departments and industry.

The position will be hosted by the Section of Quantum Physics and Information Technology (QPIT) at the Department of Physics of the Technical University of Denmark (DTU).

QPIT conducts widely recognized research within a range of diverse topics such as continuous-variable quantum information processing, quantum enhanced sensing, and engineering of solid state quantum systems. We are part of the EU Flagship project Continuous Variable Quantum Communication (CiViQ) and the EU H2020 Quantum Key Distribution Testbed project OPENQKD.

Responsibilities and tasks
We are looking for a highly motivated candidate who will be in charge of designing error correction codes for continuous-variable quantum key distribution with highest performance.  You will

  • improve tools for determining required rates for the error correction codes
  • automate the design process of highly efficient LDPC codes and their parity check matrix realization
  • integrate LDPC error correction into a continuous-variable quantum key distribution system
  • support the implementation of a high speed LDPC decoder

Candidates should have a PhD degree or equivalent.

You have a passion for developing error correcting codes and for applying the codes in practical systems such as continuous-variable quantum key distribution systems. You enjoy finding clever solutions to difficult problems and further you have the following qualifications:

  • Experience in designing highly efficient multi-edge-type LDPC codes with multi-level-coding, multi-stage-decoding for continuous-variable quantum key distribution
  • Experience with EXIT charts for code design
  • Experience in C++ programming

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 2 years.

You can read more about career paths at DTU here

Further information
Further information may be obtained from Professor Ulrik Andersen,  or Associate Professor Tobias Gehring,

You can read more about DTU Physics at   

Application procedure
Please submit your online application no later than 10 August 2020 (local time)Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply online", 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
  • Diploma (MSc/PhD)
  • List of publications

Applications and enclosures 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.

QPIT's vision is to understand, engineer and control complex quantum systems of light and matter, and to exploit these systems for quantum information processing and quantum metrology. We are a large, highly international research group of students and staff with diverse backgrounds. We have a friendly and dynamic research environment with close, daily interaction among all group members and strong collaborations with many academic and industrial partners. Technical support is excellent with electronics and process engineers embedded in the section and a large capacity, skilled mechanical workshop at the Department.

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 vision to develop and create value using science and engineering to benefit society. That vision lives on today. DTU has 11,500 students and 6,000 employees. We work in an international atmosphere and have an inclusive, evolving, and informal working environment. Our main campus is in Kgs. Lyngby north of Copenhagen and we have campuses in Roskilde and Ballerup and in Sisimiut in Greenland.