Schiano, Carlo (2025) Engineering Correlations with Structured Light. [Tesi di dottorato]
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| Tipologia del documento: | Tesi di dottorato |
|---|---|
| Lingua: | English |
| Titolo: | Engineering Correlations with Structured Light |
| Autori: | Autore Email Schiano, Carlo carlo.schiano@unina.it |
| Data: | 9 Dicembre 2025 |
| Numero di pagine: | 150 |
| Istituzione: | Università degli Studi di Napoli Federico II |
| Dottorato: | Quantum Technologies (Tecnologie Quantistiche) |
| Ciclo di dottorato: | 38 |
| Coordinatore del Corso di dottorato: | nome email Tafuri, Francesco francesco.tafuri@unina.it |
| Tutor: | nome email De Lisio, Corrado [non definito] D'Ambrosio, Vincenzo [non definito] |
| Data: | 9 Dicembre 2025 |
| Numero di pagine: | 150 |
| Parole chiave: | Structured Light; Quantum Interference; Structured Correlations |
| Settori scientifico-disciplinari del MIUR: | Area 02 - Scienze fisiche > FIS/03 - Fisica della materia |
| Depositato il: | 07 Gen 2026 09:51 |
| Ultima modifica: | 12 Ago 2026 05:39 |
| URI: | https://www.fedoa.unina.it/id/eprint/17082 |
Abstract
This thesis investigates the use of structured light as a platform for controlling and engineering photonic correlations, both in free space and in integrated optical systems. In the first part, a quantum-interference-based scheme is developed to generate and manipulate multidimensional spatial correlations. The method exploits the quantum interference of polarisation-structured beams on a beam splitter, where the spatial tailoring of input polarisation and the use of projective measurements before detection enable the programmable structuring of correlation patterns. The experimental implementation employs a time-resolved single-photon camera (TimePix3), for which a dedicated calibration protocol was developed to correct intrinsic pixel-dependent temporal delays, enhancing the overall signal-to-noise ratio. The second part of the thesis focuses on the characterisation of a ring-core waveguide, an integrated photonic device capable of supporting orbital-angular-momentum carrying modes. The characterisation was performed through three tomographic techniques, enabling the reconstruction of both its eigenmodes and its complete process matrix. This comprehensive characterisation provides a quantum-level description of the optical transformation induced by the device and represents a key step toward the integration of structured light within photonic circuits. We believe that the techniques and methodologies developed in this work will play an important role in shaping the next generation of experiments in quantum photonics. The achieved control over spatial correlations, together with the advanced calibration of time-resolved single-photon detectors and the precise characterisation of integrated optical processes, provides a comprehensive experimental framework for investigating and engineering quantum interference phenomena.
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