Journal
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
Volume 17, Issue 8, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0219749919410107
Keywords
Quantum imaging; non-classical correlations; gradient-index
Categories
Funding
- EMPIR (European Union Horizon 2020 research and innovation program ) [17FUN01-BeCOMe]
- EMPIR (EMPIR participating States) [17FUN01-BeCOMe]
- Horizon 2020 research and innovation program [862644]
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In this work, quantum metrology techniques are applied to the imaging of objects with a nonuniform refractive spatial profile. A sensible improvement on the classical accuracy is shown to be found when the Twin Beam (TWB) State is used. In particular, exploiting the multi-mode spatial correlation, naturally produced in the Parametric Down Conversion (PDC) process, allows a 2D reconstruction of complex spatial profiles, thus enabling an enhanced imaging. The idea is to use one of the spatially multimode beams to probe the sample and the other as a reference to reduce the noise. A similar model can also be used to describe wave front distortion measurements. The model is meant to be followed by a first experimental demonstration of such enhanced measurement scheme.
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