Bachelors / Masters Projects – University of Copenhagen

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Center for Quantum Devices > Research > Bachelors / Masters Pr...

Experiments on quantum wires and hybrid quantum dots 

Student projects will focus on devices based on nanostructured materials synthesized in-house such as semiconductor nanowires or carbon-based materials. When superconducting electrodes are attached to such wires, they form quantum dots where we can study the states arising in such ”artificial superconducting atoms/molecules”. Projects may involve nanoscale device fabrication, electrical transport measurements at sub-Kelvin temperatures and advanced data acquisition/analysis. Read more here >>

If you are interested in being involved please contact Kasper Grove-Rasmussen (k_grove@fys.ku.dk) or Jesper Nygård (nygard@nbi.dk). We have no openings at the moment, but can discuss opportunities for projects starting medio 2016.  

Topological Superconductivity in 2D Electron Gases 
Topological superconductors are a new class of materials, expected to hold a superconductive gap in their bulk and protected states at their boundaries. These states are called Majorana modes, and are attracting an enormous experimental and theoretical interest. Our research objective is to take topological superconductors to the new dimension by developing a 2D platform for creating, studying and manipulation Majorana modes. We are looking for motivated bachelor and master students to side us in our research. During your stay you will be involved in nano fabrication of devices, electrical measurements at cryogenic temperatures, data analysis and much more. Our interest ranges from studying fundamenal properties of matter to using Majorana modes for quantum computation. Read more here >>

If you are interested in being involved please contact Fabrizio Nichele (fnichele@nbi.ku.dk) or Charlie Marcus (marcus@nbi.dk).

Electron Spin Based Qubits 

Our spin qubit team is looking for bachelor and master students to work on several new projects to fabricate, control, read out, and couple single electron spins to make quantum mechanical bits, the building block for a quantum computer. Using state-of-the-art electron beam lithography at the center’s nanofabrication facilities we are able to fabricate semiconducting quantum dots of ~ 100 nm in size. These dots contain a single electron, like an artificial hydrogen atom. We work on the material platforms SiGe, silicon-on-insulator and GaAs. At sufficiently low temperatures (tens of millikelvin) we can couple these quantum dots to each other. By applying high frequency pulses (MHz to GHz regime) we can control and read out their spin state with high fidelity, read more here >> .

If you are interested in these or other projects of the spin qubit team, please contact  Ferdinand Kuemmeth (kuemmeth@nbi.dk).

Nanowires 
Nanostructured materials such as semiconductor nanowires are produced at HCØ. Nanowires are fascinating in their own right and are also employed in a variety of devices ranging from sensors to quantum electronics. Students with an interest in growth, structural properties, nanoscale imaging or the physics of nanowires can get introduced to the nanowire research groups and learn more about potential projects and supervisors.

If you are interested in being involved please contact Jesper Nygård (nygard@nbi.dk) or Peter Krogstrup (krogstrup@nbi.dk).

Semiconductor Nanowire-Based Superconducting Qubits 
Superconducting qubits are a leading platform for building a quantum computer.  Our group has recently developed a new type of superconducting qubit based around a semiconductor nanowire element that enables simplified control. Bachelor’s and Master’s projects are available exploring experimentally how these qubits can be scaled to multi-qubit processors that allow us to execute primitive quantum algorithms with high precision. Projects will focus on different aspects of this goal, from fabrication of multi-qubit devices to high fidelity qubit control and readout, working as a part of a team of researchers and collaborating closely with theorists and computer scientists. Experiments will utilise state-of-the-art nanofabrication and low temperature measurement facilities at the Center for Quantum Devices. 

If you are interested in being involved please contact Karl Petersson (karl.petersson@nbi.ku.dk) or Charlie Marcus (marcus@nbi.dk).

Mesoscopic electronic devices at the interfaces of complex oxides 

We have available master projects in the sub-group working on the physics of complex oxides heterostructures. This system has remarkable properties: In some aspects it behaves as a semiconductor with properties that can be tuned by electrical fields. However, in contrast to semiconductors, the electrical field not only changes the conductivity, but can also drive quantum phase transitions into superconducting or magnetic regimes. These properties belong to the realm of correlated materials and are completely unheard of in conventional semiconductors. Read more here >>

If you are interested in getting involved in the research projects contact Thomas Sand Jespersen (tsand@fys.ku.dk).