Shaping the spatial correlations of photon pairs for quantum imaging applications

Cameron, Patrick (2024) Shaping the spatial correlations of photon pairs for quantum imaging applications. PhD thesis, University of Glasgow.

Abstract

The field of quantum imaging exploits the quantum properties of light to surpass fundamental classical limits and to develop novel imaging modalities. For example, the use of nonclassical states of light can offer enhanced resolution, increased sensitivity, and improved noise performance compared to classical techniques. In recent years, significant advances in non-classical sources- particularly sources of photon pairs- and camera technologies have enabled many new quantum imaging schemes, primarily in the form of proof of concept experiments, but increasingly approaching real-world applications.

In parallel, light structuring techniques have strongly developed in the realm of classical imaging. Revolutionary tools, such as spatial light modulators(SLMs), allow the manipulation of the phase and amplitude of coherent light beams with extremely high precision. Shaping light with such digital holograms can, for example, enable imaging through scattering media or transforming light from one transverse spatial mode to another. Over the past few years, such tools have had a significant impact on various fields of optics, including metrology, imaging, microscopy, and communications.

This thesis investigates how the concepts of classical light shaping can be adapted and applied to improve techniques of quantum imaging with photon pairs. A theoretical framework describing such shaping is developed, and the key differences between classical and photon-pair shaping are highlighted. These concepts are then applied to the practical problem of imaging through aberrations. A novel adaptive optics method to correct for aberrations in an imaging system is demonstrated, with potential applications in classical and quantum microscopy. Beyond imaging, some applications of two-photon shaping for quantum communications are also explored.

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Subjects: Q Science > QC Physics
• Colleges/Schools: College of Science and Engineering > School of Physics and Astronomy
• Supervisor's Name: Faccio, Professor Daniele
• Date of Award: 2024
• Depositing User: Theses Team
• Unique ID: glathesis:2024-84605
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 08 Oct 2024 15:36
• Last Modified: 08 Oct 2024 15:39
• Thesis DOI: 10.5525/gla.thesis.84605
• URI: https://theses.gla.ac.uk/id/eprint/84605

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