Experimentelle Arbeiten



Zusätzlich zu den ausgeschriebenen Projekten freuen wir uns immer sehr über Initiativbewerbungen. Bitte kontaktieren Sie hierzu den Gruppenleiter, mit dem Sie arbeiten möchten, um mögliche Projekte zu besprechen.

  Neuronales Netzwerk Urheberrecht: Otten

B.Sc. Arbeit Machine Learning techniques for automated tuning of quantum dots

In this project, you will research and implement machine-learning techniques to identify certain features in a measured set of charge stability diagrams and classify the data by the number of quantum dots. The goal of this project is not only to implement first machine learning approaches and use them for automated tuning, but also to establish this knowledge in our group.

Projektbeschreibung (PDF)

  Typical spectra of an InAs quantum dot Urheberrecht: Kardynal

B.Sc.-Arbeit Dark-field microscopy for resonant excitation of self-assembled quantum dots

In this project, you will develop dark-field optical microscopy setup based on polarization optics. You will use it to characterise properties of the InAs quantum dots under resonant excitation. To achieve this goal you will add the polarization optics in the existing micro-photoluminescence setup and develop an algorithm to align it for a maximum signal to background ratio.

Projektbeschreibung (PDF)

  GaAs sample Urheberrecht: Cerfontaine

M.Sc.-Arbeit Experimental High-Fidelity Two-Qubit Gates for Spin Qubits

In this project you will work on the experimental demonstration and characterization of a two-qubit gate mediated by the exchange interaction. Using a sophisticated 15 mK measurement setup, you will control two qubits with advanced high-frequency control and readout electronics.

Projektbeschreibung (PDF) Kontakt: Pascal Cerfontaine

  Optical cavity Urheberrecht: Witzens

M.Sc. Project: Time Multiplexed Optical Qubit Readout

In this project, you will be designing optical cavities to facilitate the collection of photons emitted by quantum dots into optical fibers. This project is part of a new activity initiated by the Chair of Integrated Photonics (IPH) together with the Quantum Technology Group on time-interleaved (multiplexed) optical readout of quantum dots.

Project description (PDF)

  Si-MOS Struktur Urheberrecht: Klos

M.Sc. Project Multi qubit Si quantum devices fabricated by industrial processes

In this project, you will fabricate and characterize the Si-MOS quantum device with state-of-the art equipment at IHT and our group. This explicitly includes the hands-on improvement and use of industrial fabrication processes in multiple research cleanroom facilities in Aachen and electrical measurements in our low temperature setups and cryostats.
Projektbeschreibung (PDF)

  GaAs Struktur Urheberrecht: Liu

M.Sc. Project The development of an optically-active gate-defined quantum dot

In this project, you will build an optical setup to conduct a systematic characterization of a new type of optically-active gate-defined quantum dot. Such quantum dot can be used to create an optical interface between flying photonic qubits and stationary spin qubits, which is a building block for quantum Internet.

Projektbeschreibung (PDF)

  Chevron Muster Urheberrecht: Struck

M.Sc.-Arbeit High fidelity manipulation and detection of a qubit in silicon

In this project you will optimise the control and read-out of a spin qubit in silicon. You will learn working with a sophisticated low-temperature measurement set-up. You will confine single electrons in a quantum dot, manipulate the electron spin by electric dipole spin resonance and improve the qubit control

Projektbeschreibung (PDF) Kontakt: Lars Schreiber

  Silizium qubit Urheberrecht: Veldhorst et al., Nature 526, 410-414 (2015)

M.Sc. Project Characterization of silicon qubit devices fabricated on 300 mm wafers

In this project you will characterize and improve industrially manufactured MOS-type two qubit devices. These devices facilitate higher fabrication throughput and reproducibility. You will learn how to tune Si qubit devices in order to form quantum dots and gain experience in low temperature measurements at 10 mK, high frequency, low noise measurement and data analysis using python and matlab.
Projektbeschreibung (PDF) Kontakt: Lars Schreiber

  GaAs sample Urheberrecht: Otten

M.Sc. Arbeit 3D Integration of Semiconductor Based Spin-Qubits

In this project, you will develop a flip chip process for a 42 qubit device. Large qubit numbers require a high contact density and tight integration with control hardware, both of which can benefit from modern assembly processes. Flip-Chip bonding is a well-established in industry process and will be developed for quantum chips in this project.

Projektbeschreibung (PDF)

  Schema eines Doppelquantenpunktes in ZnSe Urheberrecht: Schreiber

M.Sc.-Arbeit: Richtung Elektronenspin Quantenbits in ZnSe

ZnSe hat ideale Eigenschaften in Hinblick auf Quantumcomputer mit Elektronenspins als Qubits. Bisher jedoch wurde es für diesen Zweck noch nicht näher untersucht. In enger Zusammenarbeit mit Alex Pawlis (FZ Jülich), der Experte im Wachstum von (Zn,Mg)Se Schichten ist, werden Sie (Zn,Mg)Se Heterostrukturen und Quanten-Bauelemente elektrisch bei 1 K vermessen.
Projektbeschreibung (PDF) Kontakt: Lars Schreiber


Zusätzlich zu den ausgeschriebenen Projekten freuen wir uns immer sehr über Initiativbewerbungen. Bitte kontaktieren Sie hierzu den Gruppenleiter, mit dem Sie arbeiten möchten, um mögliche Projekte zu besprechen.