The Department of Microtechnology and Nanoscience focuses on research, innovation and education within the fields of future electronics, photonics, bio- and nanosystems. A close collaboration with Swedish and international partners within academia, industry and society enables scientific excellence and creates an innovative environment. In addition to the 200 researchers and PhD students, MC2 houses a cleanroom for micro- and nanofabrication with the latest equipment.


Information about the research/the project/the division

The Quantum Device Physics Laboratory (QDP) at the department of Microtechnology and Nanoscience conducts research which extends over a variety of different topics. QDP is therefore divided into three sub groups: Experimental Mesoscopic Physics (EMP), Quantum Devices & Oxide Electronics (QuOx) and the Bolometer Group. Altogether, the QDP lab focuses on studying nano electronic components beyond classical electrodynamics, and explores possibilities to make quantum mechanical effects useful in practical devices.
As a PostDoc researcher, you will conduct experimental research on high quality superconducting resonators integrated with thin oxide samples and/or engineered quantum devices with an ultimate goal to identify the material natute of spin and charge fluctuators responsible for the noise and decoherence in quantum devices.
 
Major responsibilities
Noise and decoherence due to spurious two-level fluctuators (TLF) are long-standing issues for engineered solid state quantum devices. In particular, these environmental fluctuators is the main performance-limiting factor for superconducting qubits. As a result, a practical implementation of quantum computer would require massive error correction circuits, which seem very challenging to build. Alternative, and more straightforward path would be to dramatically improve the coherence time, which would relax the constraints on the quantum error correction circuits and would thus make a quantum computer more feasible. Though this task was considered to be one of the main challenges of the field for decades, all efforts to mitigate the effects of TLF have been hampered by a lack of knowledge about their chemical and physical nature. Our recent results [S.E. De Graaf et.al., Phys. Rev. Lett. (2017)] gave vital clues to the long-standing problem of noise and decoherence in superconducting devices: a technique for on-chip Electron Spin Resonance (ESR), developed in our group, allowed to identify, for the first time, the chemical species responsible for the flux noise in superconducting circuits. Furthermore, the most recent noise measurements [arXiv:1705.09158] point to the link between the charge and the flux noise in superconducting circuits.  As a postdoc, you will continue this successful research line aiming to get a detailed knowledge about TLF properties: material composition, dissipation and coherence times etc., and, based on this knowledge, develop approaches for the active chemical intervention, in order to silence the offending defects. The chemistry part will be done in collaboration with Prof. Jesper Bendix from Copenhagen University, expert in surface chemistry and ESR; a theoretical support, including DFT calculations, is expected from Prof. Henrik Grönbeck group from Chalmers, Chemistry.

Position summary
Full-time temporary employment. The position is limited to a maximum of two years (1+1).

Qualifications
The applicant must hold a PhD degree with strong background in Physics and Engineering. 
Applicants should ideally have:
• Performed high-quality research in the area of nanoelectronics
• Experience in nanofabrication of electronic devices (cleanroom environment) 
• Experience in microwave design and engineering
• Experience in low-level electronic measurements at cryogenic temperatures 
• Strong inner driving force and capabilities for independent work
• Excellent collaboration skills in a research team
• Potential to reach excellence in the research field
• Fluent in English, both oral and written skills
• Swedish skills or an intention to learn Swedish

Chalmers continuously strives to be an attractive employer. Equality and diversity are substantial foundations in all activities at Chalmers.

Application procedure
The application should be marked with Ref 20170584 and written in English. The application should be sent electronically and be attached as pdf-files, as below:

CV: (Please name the document as: CV, Surname, Ref. number) including:

• CV, include complete list of publications
• Previous teaching and pedagogical experiences
• Two references that we can contact.

Personal letter: (Please name the document as: Personal letter, Family name, Ref. number) including:

• 1-3 pages where you introduce yourself and present your qualifications.
• Previous research fields and main research results.
• Future goals and research focus. Are there any specific projects and research issues you are primarily interested in?

Other documents:

• Attested copies of completed education, grades and other certificates.

Please use the button at the foot of the page to reach the application form. The files may be compressed (zipped).

Application deadline: 20 January, 2018

For questions, please contact:
Sergey Kubatkin, sergey.kubatkin@chalmers.se, 0730-290824
Andrey Danilov, andrey.danilov@chalmers.se, 0702-562299     

*** Chalmers declines to consider all offers of further announcement publishing or other types of support for the recruiting process in connection with this position. *** 
   



Chalmers University of Technology conducts research and education in engineering sciences, architecture, technology-related mathematical sciences, natural and nautical sciences, working in close collaboration with industry and society. The strategy for scientific excellence focuses on our eight Areas of Advance; Building Futures, Energy, Information & Communication Technology, Life Science, Materials Science, Nanoscience & Nanotechnology, Production and Transport. The aim is to make an active contribution to a sustainable future using the basic sciences as a foundation and innovation and entrepreneurship as the central driving forces. Chalmers has around 11,000 students and 3,000 employees. New knowledge and improved technology have characterised Chalmers since its foundation in 1829, completely in accordance with the will of William Chalmers and his motto: Avancez!