Quantum Coherence Lab

Zumbühl Group

 
 

Interested to do research in our group?

Please submit your application to Dominik Zumbühl, openings come and go, we may have opportunities for:

  • Semester projects / internships (bachelor students)
  • Thesis projects (masters students)
  • graduate students
  • postdoctoral fellows

To apply, please email Dominik Zumbühl the following documents:

  1. a curriculum vitae, including publication list (if available) and names/contacts of referees
  2. a thesis (Masters, and/or PhD thesis)¨
  3. applicants for PhD, MSc or internship positions: detailed (scanned, pdf) Master and Bachelor degree grades
  4. a description of interests and skills might be helpful.

There are periodic calls for excellence fellowships in our Basel QCQT PhD school, and our Georg H. Endress Fellows cluster. Please check those pages for details.

In our group, we are looking for outstanding and highly motivated students and/or postdoctoral fellows to work on quantum transport experiments on:

  • spin qubits (electrons, holes) in semiconductor nanostructures
    for quantum computing
    • Ge/Si nanowires gate defined dots
    • Si finFET transistors
    • Ge/Si planar gate defined dots
    • GaAs quantum dots
  • microkelvin temperatures in nano samples
    for quantum transport experiments
  • nanowires and 1D systems for novel quantum matter
    such as helical states, nuclear spin helices, Majorana fermions, parafermions and other exotic quantum phases
  • tunneling spectroscopy to probe edge states
    such as (fractional) quantum hall states and other edge states in exotic materials such as topological insulators
  • spin-orbit coupling in semiconductor quantum wells and wires
    in various materials and nanostructures, to study strong spin-orbit coupling and spin helix physics in quantum transport

See also the group's publications for recent recent and ongoing projects.

Ph. D. candidates need to hold a masters (or equivalent) degree, preferably in physics or a closely related discipline. Some prior experience in (experimental) condensed matter physics would be helpful. German language proficiency is not necessary. Graduate students are expected to work in a team together with postdoctoral fellows as well as graduate and undergraduate students.

Postdoc candidates should have a Ph. D. in experimental physics or a closely related field and need a strong background in at least some of the following areas: mesoscopic physics and experiments, device nanofabrication, millikelvin experiments, low noise electronic measurements, microwave and fast pulse techniques, experiment control and data acquisition. German language proficiency is not necessary. Post-docs are working in a team and help advise students.

As a part of a continuing academic education, all employees in our Department are participating in various teaching activities, primarily during the semester (about one day per week effort during semesters). Post-doctoral assignment: 2-3 years. Ph. D. duration: 4 years.

The Department of Physics in Basel offers a highly stimulating and collaborative environment with several active and internationally recognized research groups in both experimental and theoretical condensed matter physics. The experimental groups are jointly running excellent clean room facilities which we continue to develop and extend to meet our changing nanofabrication needs. Further, an outstanding electronics workshop and a superb machine shop are operated by our Department. Our group is part of

the European Microkelvin Platform,
the Basel Center for Quantum Computing and Quantum Coherence,
the Swiss Nanoscience Institute,
and the NCCR Quantum Science and Technology - NCCR QSIT of the Swiss NSF.

 

Hole Spin Qubits in Ge/Si Nanowires - QUSTEC (position filled)

We are looking for a highly motivated and talented physicist for the investigation of hole spin qubits formed in Ge-Si core-shell nanowire quantum dots. This project is part of QUSTEC at EUCOR. For further information see the QUSTEC webpage, refer to the following pdf document or contact Prof. Dr. Dominik Zumbühl and/or Dr. Christian Scheller.

 

Mikrokelvin temperatures in nanoelectronic devices (position filled)

We are looking for a highly motivated and talented physicist with strong laboratory skills for the study of tunnel junction devices and GaAs two dimensional electron gases (2DEGs) at ultra-low temperatures, obtained by means of on-chip adiabatic nuclear demagnetization. For further information please refer to the following pdf document or contact Prof. Dr. Dominik Zumbühl and/or Dr. Christian Scheller.

 

Spin-orbit interaction and dipole spin resonance in Ge-Si nanowire quantum dots (position filled)

We are looking for a highly motivated and talented physicist for the investigation of hole spin qubits formed in Ge-Si core-shell nanowire quantum dots. For further information please refer to the following pdf document or contact Prof. Dr. Dominik Zumbühl and/or Dr. Christian Scheller.

 

Orbital control, g-factor and spin tunneling anisotropy in a GaAs quantum dot (position filled)

We are looking for a highly motivated and talented physicist for the research of the theoretically g-factor anisotropy, as well as spin tunneling anisotropy in a lateral Gallium Arsenide (GaAs) quantum dot spin qubit device measured at millikelvin temperatures. For further information please refer to the following pdf document or contact Prof. Dr. Dominik Zumbühl and/or Dr. Christian Scheller.

 

Edge state tunneling spectroscopy (position filled)

We are looking for a highly motivated and talented physicist for the study of integer and fractional quantum Hall edge states in GaAs by means of tunneling spectroscopy using an adjacent cleaved edge overgrowth quantum wire. For further information please refer to the following pdf document or contact Prof. Dr. Dominik Zumbühl and/or Dr. Christian Scheller.

 

Hands on a Spin Qubit Device: g-factor anisotropy in GaAs (MSc project, filled)

We are looking for a motivated, talented and technology-savvy physics or nanoscience student for research of the theoretically predicted g-factor anisotropy in a lateral Gallium Arsenide (GaAs) quantum dot spin qubit device measured at sub-Kelvin temperature. For further information please refer to the following pdf document or contact Prof. Dr. Zumbühl and/or Leon Camenzind.

 

Edge mode velocities from tunneling spectroscopy (MSc position, filled)

We are looking for a highly motivated master student who is interested in working on low temperature quantum transport experiments. The goal of those experiments is to utilize a new spectroscopy technique developed in our group with the aim to obtain the velocities of edge states in cleaved edge overgrown samples. For further information please refer to the following pdf document or contact Prof. Dr. Zumbühl and/or Taras Patlatiuk.

 

Contact Information

Department of Physics, University of Basel
Klingelbergstrasse 82
CH-4056 Basel
Switzerland

Phones
+41 (0)61 207 3693 (office 1.16, Dominik)
+41 (0)61 207 3786 (office 1.10)
+41 (0)61 207 3691 (office 1.12)
+41 (0)61 207 1080 (Cryo Lab -1.3)
+41 (0)61 207 3583 (Cryo Hall E002)
+41 (0)61 207 3682 (AFM 0.17)

Fax
+41 (0)61 267 3784

VAT Number: 401312

There are two secretaries, who know the group  and can help you:

Phone: +41 (0)61 207 3688