Institute for Quantum Materials and Technologies

We are seeking qualified candidates at the bachelor, master, doctoral and postdoctoral level to carry out our research program.

Some specific research projects are listed below. To inquire about opportunities at IQMT, please contact Prof. Matthieu Le Tacon.

PhD Positions, Bachelor and Master Theses

"Elastic Tuning and Response of Electronic Quantum Phases of Matter"


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There are several open PhD positions in the new collaborative research center transregio Elastic tuning and response of electronic quantum phases of matter available. The positions at KIT will be located at the Institute for Quantum Materials and Technologies (IQMT). There is a wide range of possible tasks including material synthesis, characterization, thermodynamics, spectroscopic probes and theoretical modelling. Please send a message to Prof. Matthieu Le Tacon or one the project leaders in the list below if you are interested in working with quantum materials and have concluded your master thesis or will do so soon. Bachelor and Master theses in these or related projects are also possible at any time.

List of projects with PhD positions at KIT:

  • A02: Uniaxial- and biaxial-strain-induced phase switching of itinerant AT2X2-type antiferromagnets
  • A07: Theoretical approaches to electron-phonon coupling in strongly correlated systems
  • A08: NV-center spectroscopy for strain sensing of non-collinear antiferromagnets
  • A11: Quantum materials with strong elastic coupling: critical elasticity, crystal grains and surfaces
  • B01: Dynamics and noise of disordered strain-coupled electronic order
  • B03: Elastic Tuning of competing orders in correlated superconductors
  • B06: Static and dynamic coupling of lattice and electronic degrees of freedom in magnetically ordered transition metal dichalcogenides

 

Post-doc Position

"Superconducting Quantum Electronics"

in the Working Group Kinetic Inductance Quantum Systems


We invite motivated postdoctoral candidates with a PhD in physics to apply for a fellowship in our group. We are especially looking for candidates with experience in one of the following fields: microfabrication, low temperature condensed matter, or high-frequency electronics.

Several projects in the field of superconducting quantum electronics are available, depending on the candidate’s profile. Successful candidates are expected to integrate a small research team, collaborating with PhD and Master students. There is no mandatory teaching requirement.

The annual fellowship quantum is based on the E13 salary grid, plus benefits.

Contact: Dr. Ioan Pop

 

PhD Position

"Josephson Junction Networks"

in the Working Group Kinetic Inductance Quantum Systems


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Thesis project in the context of implementations of quantum information processing with superconducting circuits.

We are looking for a motivated PhD candidate to design, implement, and operate quantum superconducting circuits. This project will focus on the study of networks of Jospehson junctions with custom tailored energy spectra.

During their training, PhD candidates will gain practical experience in microelectronics design, microfabrication, low temperature (mK) measurements, and high-frequency electronics.

Our laboratory benefits from a fully functional nanofabrication facility, including an electron beam pattern generator, optical lithography, metal deposition machines and imaging tools.

Contact: Dr. Ioan Pop

 

PhD Position

"High Kinetic Inductance Media"

in the Working Group Kinetic Inductance Quantum Systems


Thesis project in the context of implementations of quantum information processing with superconducting circuits.

We are looking for a motivated PhD candidate.

During their training, PhD candidates will gain practical experience in microelectronics design, microfabrication, low temperature (mK) measurements, and high-frequency electronics.

Our laboratory benefits from a fully functional nanofabrication facility, including an electron beam pattern generator, optical lithography, metal deposition machines and imaging tools.

Contact: Dr. Ioan Pop

 

Master Thesis

"Multiferroic Properties of Orthoferrite / Manganite Superlattices"

in the Working Group Thin Films and Interfaces


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Multiferroic materials host two or more order parameters simultaneously which show cross-coupling among each other. An archetypical example is the multiferroicity in orthorhombic rare-earth manganites/ferrites, R(Mn,Fe,)O3 (R = Gd -Lu). Here, the magnetic order breaks the inversion symmetry of the crystal and induces the ferroelectric polar ordering and represents a special class of magneto-electric multiferroics. Thin film materials are of special interest because multiferroic properties get dramatically tunable by epitaxial strain, making heterostructures or superlattices of these materials promising candidates for electronic devices. In addition, the combination of multiferroics showing large magnetization or polarization, respectively, may allow for an increase of magneto-electric coupling in a SL. For applications at room temperature, the orthorhombic LuFeO3 and LuMnO3 are very suitable because of their high magnetic and ferroelectric ordering temperature.

In the proposed master thesis, the main objective is the preparation of highly crystalline n-LuFeO3/m-LuMnO3 SL by pulsed laser deposition technique. The structural properties will be characterized in detail by x-ray diffraction. Magnetic and dielectric properties are probed by magnetization and impedance measurements

Contact: Dr. Dirk Fuchs

 

Master Thesis

"Induced Superconductivity in Graphene"

in the Working Group Device Physics


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By placing graphene between hexagonal boron nitride, one can produce high quality devices called van der Waals heterostructures [1], in which charge carrier transport is ballistic. When graphene is connected to superconducting leads, a dissipationless current (called supercurrent) can flow through the device [2-4]. In this project, we study the limit of this induced superconductivity in ballistic graphene, that is to say the maximum distance over which the supercurrent can be measured. The effect will be probed by quantum transport and magnetic interferometry experiments .

What you will learn

You will develop new electronic devices using graphene as a base material and investigate their fundamental physical properties. You will learn the use of the equipment and facilities of the Institute for Nanotechnology (electron beam lithography, ultra-high vacuum deposition systems, low-noise electrical measurement at cryogenic temperatures, Raman spectroscopy, etc.) and will benefit from a strong theoretical support. Our work is supported by the DFG.
[1] Geim et al., Nature 499,419 (2013)
[2] Heersche et al, Nature 446, 56 (2007)
[3] Allen et al., Nature Phys. 12, 128 (2016)
[4] Ben Shalom et al., Nature Phys. 12, 318 (2016)
[1] Geim et al., Nature 499,419 (2013)
[2] Heersche et al, Nature 446, 56 (2007)
[3] Allen et al., Nature Phys. 12, 128 (2016)
[4] Ben Shalom et al., Nature Phys. 12, 318 (2016)

Contact: Dr. Romain Danneau

 

Master Thesis

"Precision Spectroscopy of Rare Earth Ions"

in the Working Group Quantum Optics


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We are inviting applications for a PhD position.

The project focuses on realizing an efficient optical interface for individual rare earth ions in solids with open-access optical microcavities. Rare earth ions provide exceptional optical and hyperfine coherence, which makes them promising candidates for quantum optical applications, ranging from quantum memories to quantum-nonlinear optics. We want to gain efficient access to individual ions and small ensembles by coupling them to a high finesse optical microcavity and enhancing their emission.

The goal of the master thesis is to establish a laser system for precision spectroscopy. It involves the setup of an ultra-stable reference cavity and implementation of laser frequency stabilization. The system will then be used for cavity-enhanced spectroscopy of single ions and ion ensembles.

We seek for a creative and motivated individual to advance this research project.

Applications should include

  • a curriculum vitae
  • academic records (Bachelor, Master transcript of records)
For further inquiries and applications please contact Prof. David Hunger.

 

Master Thesis

"Cascaded Enhancement of Light-Matter Interactions with Nanoantennas Coupled to a Tunable Microcavity"

in the Working Group Quantum Optics


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We are offering a position for a Master Thesis.

We are performing experiments on cavity enhancement of the fluorescence of individual solid state emitters and on cavity-enhanced microscopy and spectroscopy. Our vision is to realize efficient quantum interfaces between light and matter. Such interfaces call for ultimative spatio-temporal confinement of light, i.e. the combination of a large quality factor and a microscopic cavity mode volume. Using optical fibers with laser-machined endfacets as mirror substrates, we have realized microscopic cavities with wavelength-scale mode volumes and exceptionally high quality factors.

The combination of such cavities with metallic nano-antennas offers additional enhancement potential. The first goal of this thesis is to investigate the coupling of nanofabricated Bowtie antennas to a tunable microcavity. In a second step, enhanced light matter interactions with ensembles of emitters coupled to the cascaded photonic system will be explored.

We seek for a creative and motivated individual to advance this research project.

Applications should include

  • a curriculum vitae
  • academic records (Bachelor, Master transcript of records)
For further inquiries and applications please contact Prof. David Hunger.

 

Master Thesis

"Design and Fabrication of Superconducting Circuits"

in the Working Group Kinetic Inductance Quantum Systems


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Master thesis project in the context of implementations of quantum information processing with superconducting circuits.

We invite interested students to apply for a Master thesis in our group. During their thesis, they will get an introduction to the field of superconducting electronics and gain practical experience in microelectronics design and micro-fabrication in a cleanroom (e-beam and optical lithography).

Our laboratory benefits from a fully functional nanofabrication facility, including an electron beam pattern generator, optical lithography, metal deposition machines and imaging tools.

Contact: Dr. Ioan Pop

 

Master Thesis

"Electromagnetic Modeling of High Frequency Superconducting Circuits"

in the Working Group Kinetic Inductance Quantum Systems


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Master thesis project in the context of implementations of quantum information processing with superconducting circuits.

We invite students interested in the field of high frequency (GHz) quantum electronics to apply for a Master thesis in our group. During the thesis they will get an introduction to the field of superconducting electronics, and gain practical experience in microelectronics design and high frequency electromagnetic simulations.

Contact: Dr. Ioan Pop