The team at The UK Quantum Technology Hub in Quantum Enhanced Imaging (QuantIC) at Imperial College London are using non-linear interference so that infra-red light can probe an object, but the information is carried by visible light.
That means an inexpensive, visible source and a standard silicon CMOS camera can be used for detection. This in turn results in an affordable system that is compact, robust, portable and can output phase and transmission information in real time.
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