Postdoc in Graphene Devices for Single-photon Sensing

We are seeking to fill an experimental post-doctoral position with focus on quantum sensors of single photons from GHz to THz range.

Information about the research
The aim of this project is to exploit the small heat capacity and quantum localization of charge carriers in graphene at Dirac point to detect low energy photons. We will explore the possibility to develop a ‘click’ single proton detection of microwave protons down to 10 GHz – a typical energy range of superconducting quantum bits. Candidates with background on graphene device microfabrication and DC/RF measurements are all welcome to apply.

As a postdoc you will be part of the Department of Microtechnology and Nanoscience (MC2). This project will be performed within the Wallenberg Centre for Quantum Technology, and it’s a close collaboration between the Quantum Technology Laboratory (QTL) and the Quantum Device Physics Laboratory (QDP) at Chalmers. QTLs goal is the development of a functioning quantum computer with at least a hundred qubits, and the QDP Lab performs research in nanoscale devices made with emerging materials tailored down to the atomic scale. The project is also part of an international collaboration with Aalto University in Finland (Prof. Jukka Pekola's group).

Major responsibilities
As a postdoc, you will carry out experimental work in quantum transport in graphene devices.  

We aim at producing and studying a new kind of Quantum sensor of single photons from GHz to THz range using graphene doped at Dirac point. Your task will be to fabricate graphene devices/sensors and evaluate their performance at microwave setup at low temperatures.

We plan to
a) Develop direct detection devices as suggested in our joint work with Prof. Pekola’s group at Aalto University (ongoing collaboration). The operation can be tested with e.g. qubit-based single-photon emitters
b) Develop less-invasive readout schemes (i.e. compared to the resistance readout), such as quantum capacitance/kinetic inductance measurements.
c) Continue our approach to coherent detection in higher frequency range, (100 -5000) GHz aiming at practical applications of such sensors for quantum technology applications.

The equipment and infrastructure available for the execution of this project are: reactor for growth of epitaxial graphene on SiC. Device fabrication and characterization in state-of-the-art clean room. For electrical measurements, our lab is equipped with DC/high frequency electrical characterization (magneto transport) at low-temperatures and magnetic fields up to B=14T.

Qualifications
You are an experimentalist with a solid background in condensed matter physics, with experience in either electronic transport measurements at low temperatures, and/or device fabrication techniques in cleanroom environment, and/or in 2D material growth/characterization methods.

You must hold a PhD degree in Physics, Applied Physics, Material science, Nanotechnology or equivalent. The degree should generally not be older than three years. An additional merit is if you have experience in designing and constructing experimental setups.

You are a hands-on person, with strong inner driving force and capabilities for independent work, excellent collaboration skills in a research team and you have good oral and written communication skills in English.

In your personal letter submitted to this application, please add a max. 1 page proposal of where single photons detector can be used.

Contract terms
This postdoc position is a full-time temporary employment for two years with a competitive salary according to Swedish and Chalmers regulations.

We offer
Chalmers offers a cultivating and inspiring working environment in the coastal city of Gothenburg. 
Read more about working at Chalmers and our benefits for employees.

Chalmers aims to actively improve our gender balance. We work broadly with equality projects, for example the GENIE Initiative on gender equality for excellence. Equality and diversity are substantial foundations in all activities at Chalmers.

Application procedure
The application should be marked with Ref 20220027 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)
1-3 pages where you:
• Introduce yourself
• Describe your previous research fields and main research results
• Describe your future goals and future research focus
• Max. 1 page proposal of where single photons detector can be used

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: 28 February, 2022

For questions, please contact:
Sergey Kubatkin, QDP/MC2
E-mail: sergey.kubatkin@chalmers.se
Phone: +46317725475 

Samuel Lara-Avila, QDP/MC2
E-mail: samuel.lara@chalmers.se
Phone: +46733430253

Andrey Danilov, QDP/MC2
E-mail: andrey.danilov@chalmers.se
Phone: +46702562299

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