Quantum-limited super-resolution imaging

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Enhancing the resolution in imaging is crucial for many fields in science and technology but is always hampered by the diffractionlimit. Treating light fields as quantum systems, quantum information theory show that it is possible to fundamentally break thediffraction limit by demultiplexing the optical field into different spatial modes. However, the way to approach the quantum limit forfull imaging remains unclear and it is challenging to realize quantum-limited super-resolution for truly microscopic objects. To tacklethis problem, the proposed research aims to: (1) identify the quantum resolution limit for full imaging; (2) develop a practical anduniversal imaging method towards the quantum limit; (3) realize the prototype of quantum-limited far-field microscope. Throughcomprehensive training on both research and transferable skills, this action will diversify the applicant's competences for academicleadership.The research will integrate multidisciplinary and interdisciplinary approaches, combining (1) quantum tomography and statisticalanalysis with Fisher information formalism, (2) spatial mode manipulation and detection of light, and (3) nano-optics/microscopy toestablish quantum estimation theory of full imaging, develop novel detection techniques, perform microscopic imaging and evaluateits advantages over conventional imaging.The 3 research objectives correspond to 3 progressive research work packages to ensure the success of the fellowship, together witha variety of dissemination/exploitation plans to maximize the impact of the action. The proposed objectives, if successful, will result ina revolutionary imaging technology with a potential to change the faces of all fields of science and technology that involve opticalimaging, ranging over astronomy, biology, medicine and nanotechnology, as well as optomechanical industry.