Quantum spatial modes and their use in imaging, measurement, and communication

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Quantum optics has the potential to provide highly accurate physical measurements, and to improve the speed and security of communication. The spatial modes of a light field provide a new and interesting basis for these investigations. This fellowship proposes to generate spatially correlated quantum light beams, applying them to spatial positioning applications, such as atomic force microscopy, and to quantum communication protocols. I will experimentally develop general techniques to losslessly combine multiple quantum spatial modes, and demonstrate multi-mode quantum correlations in a light beam. I will investigate the potential of this light to cryptography, densecoding, and atomic force microscopy.