Design and Simulation of a Superconducting Qubit
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Design and Simulation of a Superconducting Qubit
Master Thesis (2025)
Author(s)
Y. Gao (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Contributor(s)
Alexander Yarovoy – Mentor (TU Delft - Microwave Sensing, Signals & Systems)
S.N. Haider – Mentor (TU Delft - QCD/Haider Group)
M. Spirito – Graduation committee member (TU Delft - Electronics)
Faculty
Electrical Engineering, Mathematics and Computer Science
Transmon qubits Electromagnetic Analysis Capacitance Superconducting qubits
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Publication Year
2025
Language
English
Graduation Date
29-08-2025
Awarding Institution
Delft University of Technology
Programme
['Electrical Engineering | Microelectronics']
Faculty
Electrical Engineering, Mathematics and Computer Science
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Abstract
Quantum bits (qubits) are regarded as the building blocks of a quantum computer, which have significant implications in quantum information science. The superconducting qubit is a solid platform for quantum computing, where the Transmon qubit based on the Josephson junction or the SQUID structure is widely designed and researched. Microwave design and electromagnetic simulation of a superconducting qubit is a crucial way to determine and enhance the qubit performance in reality. The geometry of a superconducting qubit structure should be optimized to achieve the desired equivalent capacitance and consequently the resonant frequency through the external magnetic flux adjustment. In this thesis, a special superconducting qubit for lower energy loss named 'Pokemon' qubit is analyzed, with the role of different capacitance geometry in the qubit studied. This thesis also presented a comparative analysis between the in-plane capacitive structure and the flip-chip capacitance. The results pave the way for future modular quantum processing units utilizing flip-chip technology.
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