PhD studying at the Braunschweig International Graduate School of Metrology

Focus: Quantum Metrology
Our Working Group "Single-charge Circuits" of Department 2.4 "Quantum Electronics" in Braunschweig is looking for a doctoral candidate physicist or engineer (German "Diplom" or Master). The post is offered within the scope of a flagship project "realization of the ampere according to the new definition" (RF-SET part) with a running time from 1 January 2014 to 31 December 2016 (3 years). The remuneration will be paid in accordance with remuneration group 13 TVöD Bund (85 %).

Our profile:
Our Working Group is dealing with examinations of metallic and superconducting circuits with mesoscopic tunnel junctions and has many years of experience in relevant areas of physics and technology. The functioning of the circuits is based on classical and quantum-mechanical dynamic properties of the Josephson junctions and the single-electron tunnelling effects. Our research activities are focussed on the detection and controllable manipulation of single charge quanta and flux quanta as well as their interaction with single photons in the electromagnetic environment. Applications in metrology and quantum electronics are envisaged. The experimental equipment available includes a modern thin-film fabrication line in the Clean Room Centre and a low-temperature measurement system on the basis of a He3/He4 dilution refrigerator.

Your tasks:
As a member of a research team you will be working on the development and optimization of ultra-fast (broadband) charge detectors on the basis of metallic high-frequency single-electron transistors (rf-SET) for an error correction in GaAs pump circuits. You will be involved in our research process and deal with individual steps, such as the defining and solving of physical tasks, test sample design and fabrication (including continuous process optimization), and you will participate in the low-temperature measurements of the test samples which you have prepared. Your profile will be completed by presenting your results in spoken and written form on your own responsibility.

Your qualifications:
*Completed university studies in physics or electrical engineering;
*Knowledge in one of the following fields: single-electron tunnelling effects, Josephson junctions or superconducting circuits;
*Practical experience in the thin-film fabrication of single-electron tunnelling devices and/or Josephson junction circuits or mesoscopic structures. Knowledge of highfrequency technology and experience in circuit simulation will be of advantage;
*Aptitude for independent scientific work, analytical skills and ability to work in a team;
*Good command of both spoken and written scientific and technical German or English;

The closing date for applications is 22 November 2013. Unfortunately, we cannot accept applications sent via e-mail.

Contact
Prof. Dr. Meinhard Schilling
Chairman
Braunschweig International Graduate School of Metrology
Technische Universität Braunschweig
Hans-Sommer-Straße 66
D-38106 Braunschweig
Phone: +49 531 391-3866/-3867
igsm@tu-bs.de

Sourse: http://igsm.tu-bs.de/