(Final presentation, *: file attached): Jaewon Jung, Donghyuk Seo, and Shinyoung Hwang
Lecturer: Eunjong Kim
Course materials: [1] Krantz, P., Kjaergaard, M., Yan, F., Orlando, T. P., Gustavsson, S., & Oliver, W. D. (2019). A quantum engineer's guide to superconducting qubits. Applied physics reviews, 6(2). [2] Blais, A., Grimsmo, A. L., Girvin, S. M., & Wallraff, A. (2021). Circuit quantum electrodynamics. Reviews of Modern Physics, 93(2), 025005. [3] Girvin, S. M. (2014). Circuit QED: superconducting qubits coupled to microwave photons. Quantum machines: measurement and control of engineered quantum systems, 96, 113-256. [4] Langford, N. K. (2013). Circuit qed-lecture notes. arXiv preprint arXiv:1310.1897. [5] Vool, U., & Devoret, M. (2017). Introduction to quantum electromagnetic circuits. International Journal of Circuit Theory and Applications, 45(7), 897-934. [6] Oliver, W. D. (2013). Superconducting Qubits. Quantum Information Processing: Lecture Notes of the 44th IFF Spring School 2013.
Advanced Topics in Applied Physics 1 Spring Semester 2024
(Introduction to Superconducting Quantum Circuits)
1. Theoretical foundation of superconducting quantum circuits and qubits.
Learned how to quantize superconducting quantum circuits, how to describe open quantum systems, and fundamental superconductivity theories. Learned how the physical superconducting qubits are implemented; charge qubit, flux qubit, phase qubit, and transmon qubit. Then, I learned how to coherently control the qubits; single qubit and two-qubit gates (iSWAP, CZ, CR gate). In the lecture, almost all the topics are intensely dealt with solving Hamiltonians explicitly.
2. Interaction between superconducting qubits and microwave photons.
Learned the dispersive regime of Circuit QED and dispersive qubit readout technique, and quantum amplification.
3. Operation and measurement of superconducting qubits.
Learned how to manipulate qubit, single-qubit operation, and two-qubit operation in the fixed-frequency transmon and frequency tunable transmon.
Final presentation: Bosonic Error Correction*
Me, Donghyuk Seo, and Shinyoung Hwang grouped together and prepared for the presentation, Bosonic Error Correction. Introduced binomial code, Cat code, and GKP code with experimental implementations and limitations, and recent progress.