Harnessing time-frequency qudits using integrated nonlinear processes / vorgelegt von Laura Serino. Paderborn, 2025
Content
- Summary
- Zusammenfassung
- Introduction
- Author publications and contributions
- List of abbreviations
- Qudits in quantum communication
- Probability, information and Shannon entropy
- From classical to quantum communication
- Qudits
- Quantum communication with qudits
- Quantum key distribution protocols
- General steps of an HD-QKD protocol
- Secure key rate
- Entanglement-based HD-QKD
- Chapter conclusion
- Time-frequency qudits and integrated nonlinear processes
- Time-frequency qudits
- Integrated nonlinear processes
- Three-wave mixing in waveguides
- Nonlinear interaction Hamiltonian
- Frequency-space picture and Schmidt decomposition
- Tailoring nonlinear processes
- Chapter conclusion
- Generating time-frequency qudits
- High-dimensional entanglement with temporal modes
- Process engineering
- Quantifying entanglement dimensionality
- Summary of the experimental results
- Observing high-dimensional nonlocality
- Optica Quantum 2(5), 339–345 (2024)
- Decoding time-frequency qudits
- The challenge of high-dimensional detection
- The quantum pulse gate
- Multi-output quantum pulse gate
- Where is the quantum?
- Designing an mQPG
- Detector tomography
- Beyond Hermite-Gaussian modes
- Summary of the experimental results
- PRX Quantum 4, 020306 (2023)
- Opt. Express 33(3), 5577 (2025)
- Experimental HD-QKD
- Experimental realization
- Key rate analysis
- Asymptotic secret key rate
- Detection window optimization
- Beyond the asymptotic limit
- Security and future extensions
- Conclusion and outlook
- Entropic uncertainty relations in high dimensions
- MUBs and quantum uncertainty
- Inequivalent sets of MUBs and their effects on EURs
- arXiv:2507.05025
- Phys. Rev. Research 7, 033152 (2025)
- State characterization through multi-output detection
- Self-guided tomography
- FIREFLY
- A pulsed lidar system for single photons
- Quantum Sci. Technol. 10, 025024 (2025)
- arXiv:2504.08607
- Conclusion and outlook
- Derivation of modulated phase-matching function
- Miscellanea
- Bibliography
- Acknowledgments