Technical University of Denmark (DTU)

Postdocs in Quantum Information Processing and Quantum Nonlocality with Continuous Variables

Technical University of Denmark (DTU)

2800 Kgs. Lyngby, Denmark

At the Section for Quantum Physics and Information Technology, we are seeking several excellent and highly motivated postdoctoral researchers to work on the theory of quantum information processing and quantum nonlocality with continuous variables.

Measurements on quantum systems can defy classical notions of cause and effect. This represents a striking departure from a classical description of nature and is central to the foundations of modern physics. At the same time, the lack of any classical causal explanation means that quantum events can be truly random, which enables novel information processing with security based directly on natural laws. This project will explore quantum correlations in continuous degrees of freedom, which are not yet well understood. The goal is to advance our fundamental understanding of quantum physics as well as to develop ultra-secure information processing and communication.

Successful candidates will be part of the research group of Prof. Jonatan Bohr Brask, within the Section for Quantum Physics and Information Technology at DTU Physics. The section also hosts top experimental researchers working on quantum information science and technology, including at bigQ – Center for Macroscopic Quantum States, a Danish National Research Foundation Center of Excellence. This enables great opportunities for realising theoretical ideas in practice and developing realistic protocols. Close collaboration with experimental colleagues is expected.

The positions are funded by the Carlsberg Foundation.

Responsibilities and tasks
You will be developing new theoretical tools, with an aim to gain better understanding into quantum nonlocality in systems with continuous degrees of freedom, as well as novel protocols for secure quantum information processing. The work can be focused towards fundamental questions or applications, according to interests. Tasks could include

  • Deriving new Bell inequalities.
  • Developing new numerical methods for nonlocality test.
  • Exploring device-independent and semi-device-independent random number generation and cryptography.
  • Developing novel proposals for quantum-optical implementations of continuous-variable nonlocality or new information-processing protocols.

You will be expected to present your results in scientific publications and at international conferences and meetings.

You will also be participating in the supervision of bachelor-, master-, and possibly graduate-level students, and in the lively academic environment within the section, with discussions, seminars, and social events.

Candidates should hold a PhD degree in physics, applied mathematics, or equivalent, and should have solid experience with quantum information science. In addition,
  • Prior experience with quantum nonlocality and/or (semi)-device-independent quantum information processing is an advantage.
  • Prior experience with continuous variables in quantum information is an advantage (e.g. CV-QKD).
  • Prior experience with numerical tools in nonlocality/quantum information processing is an advantage (e.g. convex optimisation).
  • Good communication skills in both spoken and written English are required.

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 salary level is approximately 65.000 EUR/year incl. pension, with adjustments depending on experience.

The employment period is 2 years. The starting date is flexible, but preferably by 15 June 2020 or earlier.

You can read more about career paths at DTU here.

Further information
Further information may be obtained from Prof. Jonatan Bohr Brask, tel.: (+45) 9351 0460, email:

You can read more about the research of Prof. Brask here, and about the Section for Quantum Physics and Information Technology here.

Application procedure
Please submit your online application no later than 15 March 2019 (23:59 local time).

Apply online at

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.

DTU Physics
At DTU Physics, we carry out cutting-edge research in modern physics, with particular focus on four main areas: quantum technology, sustainable energy, materials, and biophysics. Our focus is both to acquire greater knowledge about basic scientific problems and to conduct research oriented towards use in societies and companies.

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.

Please apply via recruiter’s website.