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Dr. Nadezhda Kukharchyk

Phone
+49 89 289-14226
Room
E-Mail
nadezhda.kukharchyk@tum.de
Links
Page in TUMonline
Group
Technical Physics

Courses and Dates

Title and Module Assignment
ArtSWSLecturer(s)Dates
Magnetism
eLearning course course documents
Assigned to modules:
VO 2 Kukharchyk, N. Tue, 14:00–15:30, WMI 143
Exercise to Magnetism
eLearning course course documents
Assigned to modules:
UE 1 Kukharchyk, N. dates in groups

Offered Bachelor’s or Master’s Theses Topics

Fabrication of a superconducting coplanar transmission line for efficient coupling to rare earth spin ensembles
The rare earth spin ensembles are well established by now in the optical domain where the microwave states are used as an intermediate state to extend the storage time [1]. Number of purely microwave manipulations by spin ensembles is very limited and is bound to coupling of spin ensembles to microwave resonating structures [2], which allows amplifying the microwave signal and enhancing the interaction between the ions and the microwave field. The main disadvantage of using these resonating structures is their fixed frequencies and very small tuning range. Typically fabricated in a coplanar design, the superconducting resonators create strongly inhomogeneous distribution of the field within the spin ensemble, which results into largely detuned Rabi frequencies experienced by the spins. Aim of this project is to fabricate novel design of microwave transmission line, which will allow for homogeneous distribution of the microwave field within the excited rare-earth spin ensemble, and at the same time, will not be bound to a specific frequency. This will allow realizing various spin manipulation schemes, which involve more than two energy levels (beyond Hahn-echo) and thus deploy complex spin-manipulation techniques. We are looking for a highly motivated master student joining this project. Within the project, you will gain hands-on experience on design and fabrication of superconducting microwave structures. You will design and fabricate superconducting transmission line, which will then be tested at cryogenic conditions when coupled to rare earth spins ensembles. [1] Kinos, A. et al. Roadmap for Rare-earth Quantum Computing. arXiv 2103.15743 (2021). [2] Ranjan, V. et al. Multimode Storage of Quantum Microwave Fields in Electron Spins over 100 ms. https://link.aps.org/doi/10.1103/PhysRevLett.125.210505 (2021).
suitable as
  • Master’s Thesis Condensed Matter Physics
Supervisor: Rudolf Gross
Fabrication of a superconducting coplanar transmission line for efficient coupling to rare earth spin ensembles
The rare earth spin ensembles are well established by now in the optical domain where the microwave states are used as an intermediate state to extend the storage time [1]. Number of purely microwave manipulations by spin ensembles is very limited and is bound to coupling of spin ensembles to microwave resonating structures [2], which allows amplifying the microwave signal and enhancing the interaction between the ions and the microwave field. The main disadvantage of using these resonating structures is their fixed frequencies and very small tuning range. Typically fabricated in a coplanar design, the superconducting resonators create strongly inhomogeneous distribution of the field within the spin ensemble, which results into largely detuned Rabi frequencies experienced by the spins. Aim of this project is to fabricate novel design of microwave transmission line, which will allow for homogeneous distribution of the microwave field within the excited rare-earth spin ensemble, and at the same time, will not be bound to a specific frequency. This will allow realizing various spin manipulation schemes, which involve more than two energy levels (beyond Hahn-echo) and thus deploy complex spin-manipulation techniques. We are looking for a highly motivated master student joining this project. Within the project, you will gain hands-on experience on design and fabrication of superconducting microwave structures. You will design and fabricate superconducting transmission line, which will then be tested at cryogenic conditions when coupled to rare earth spins ensembles. [1] Kinos, A. et al. Roadmap for Rare-earth Quantum Computing. arXiv 2103.15743 (2021). [2] Ranjan, V. et al. Multimode Storage of Quantum Microwave Fields in Electron Spins over 100 ms. https://link.aps.org/doi/10.1103/PhysRevLett.125.210505 (2021).
suitable as
  • Master’s Thesis Applied and Engineering Physics
Supervisor: Rudolf Gross
Fabrication of a superconducting coplanar transmission line for efficient coupling to rare earth spin ensembles
The rare earth spin ensembles are well established by now in the optical domain where the microwave states are used as an intermediate state to extend the storage time [1]. Number of purely microwave manipulations by spin ensembles is very limited and is bound to coupling of spin ensembles to microwave resonating structures [2], which allows amplifying the microwave signal and enhancing the interaction between the ions and the microwave field. The main disadvantage of using these resonating structures is their fixed frequencies and very small tuning range. Typically fabricated in a coplanar design, the superconducting resonators create strongly inhomogeneous distribution of the field within the spin ensemble, which results into largely detuned Rabi frequencies experienced by the spins. Aim of this project is to fabricate novel design of microwave transmission line, which will allow for homogeneous distribution of the microwave field within the excited rare-earth spin ensemble, and at the same time, will not be bound to a specific frequency. This will allow realizing various spin manipulation schemes, which involve more than two energy levels (beyond Hahn-echo) and thus deploy complex spin-manipulation techniques. We are looking for a highly motivated master student joining this project. Within the project, you will gain hands-on experience on design and fabrication of superconducting microwave structures. You will design and fabricate superconducting transmission line, which will then be tested at cryogenic conditions when coupled to rare earth spins ensembles. [1] Kinos, A. et al. Roadmap for Rare-earth Quantum Computing. arXiv 2103.15743 (2021). [2] Ranjan, V. et al. Multimode Storage of Quantum Microwave Fields in Electron Spins over 100 ms. https://link.aps.org/doi/10.1103/PhysRevLett.125.210505 (2021).
suitable as
  • Master’s Thesis Quantum Science & Technology
Supervisor: Rudolf Gross
Fabrication of a superconducting transmission line resonator in a bad-cavity limit
The rare earth spin ensembles are well established by now in the optical domain where the microwave states are used as an intermediate state to extend the storage time [1]. Number of purely microwave manipulations by spin ensembles is very limited and is bound to coupling of spin ensembles to microwave resonating structures [2], which allows amplifying the microwave signal and enhancing the interaction between the ions and the microwave field. The main disadvantage of using these resonating structures is their fixed frequencies and very small tuning range. Typically fabricated in a coplanar design, the superconducting resonators create strongly inhomogeneous distribution of the field within the spin ensemble, which results into largely detuned Rabi frequencies experienced by the spins. Aim of this project is to fabricate novel design of microwave transmission line resonator, which would work in a bad-cavity regime and will thus allow to couple to rare-earth spins at a larger badwidth. This will allow realizing various spin manipulation schemes, which involve more than two energy levels (beyond Hahn-echo) and thus deploy complex spin-manipulation techniques. We are looking for a highly motivated master student joining this project. Within the project, you will gain hands-on experience on design and fabrication of superconducting microwave structures. You will design and fabricate superconducting resonating structure, which will then be tested at cryogenic conditions when coupled to rare earth spins ensembles. [1] Kinos, A. et al. Roadmap for Rare-earth Quantum Computing. arXiv 2103.15743 (2021). [2] Ranjan, V. et al. Multimode Storage of Quantum Microwave Fields in Electron Spins over 100 ms. https://link.aps.org/doi/10.1103/PhysRevLett.125.210505 (2021).
suitable as
  • Master’s Thesis Condensed Matter Physics
Supervisor: Rudolf Gross
Fabrication of a superconducting transmission line resonator in a bad-cavity limit
The rare earth spin ensembles are well established by now in the optical domain where the microwave states are used as an intermediate state to extend the storage time [1]. Number of purely microwave manipulations by spin ensembles is very limited and is bound to coupling of spin ensembles to microwave resonating structures [2], which allows amplifying the microwave signal and enhancing the interaction between the ions and the microwave field. The main disadvantage of using these resonating structures is their fixed frequencies and very small tuning range. Typically fabricated in a coplanar design, the superconducting resonators create strongly inhomogeneous distribution of the field within the spin ensemble, which results into largely detuned Rabi frequencies experienced by the spins. Aim of this project is to fabricate novel design of microwave transmission line resonator, which would work in a bad-cavity regime and will thus allow to couple to rare-earth spins at a larger badwidth. This will allow realizing various spin manipulation schemes, which involve more than two energy levels (beyond Hahn-echo) and thus deploy complex spin-manipulation techniques. We are looking for a highly motivated master student joining this project. Within the project, you will gain hands-on experience on design and fabrication of superconducting microwave structures. You will design and fabricate superconducting resonating structure, which will then be tested at cryogenic conditions when coupled to rare earth spins ensembles. [1] Kinos, A. et al. Roadmap for Rare-earth Quantum Computing. arXiv 2103.15743 (2021). [2] Ranjan, V. et al. Multimode Storage of Quantum Microwave Fields in Electron Spins over 100 ms. https://link.aps.org/doi/10.1103/PhysRevLett.125.210505 (2021).
suitable as
  • Master’s Thesis Quantum Science & Technology
Supervisor: Rudolf Gross
Quench protection for a superconducting magnet
The generation of magnetic fields with electrical currents is deployed in multiple systems, such as generators, motors, MRI systems, up to particle accelerators and fusion reactors. In laboratory, we use superconducting magnets, which allow to generate magnetic fields at cryogenic conditions to manipulate the electronic spin transitions of paramagnetic ions. However, superconducting magnets may undergo a spontaneous transition into the normal state - a so-called quenching process. Such event would result in the generation of a large thermal energy, which is increasing with the size of the magnet. Such amount of thermal energy is enormous for a magnet placed in a cryostat below 4K. Solutions allowing to protect the magnet in case of a quench are called quench protection circuits. In this project, you are offered to develop a quench protection circuit for an existing superconducting magnet. During the project you will learn about cryogenics, the generation of magnetic fields, superconducting magnets and design of electrical circuits. We are looking for a highly motivated bachelor student joining this project. During this project you will work in an international team at Walther-Meißner-Institute.
suitable as
  • Bachelor’s Thesis Physics
Supervisor: Rudolf Gross
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