We are excited to announce that our latest work ‘Simultaneously Sorting Overlapping Quantum States of Light‘ has been published in Physical Review Letters. In this collaboration with the QOCI Group, we demonstrate simultaneous and efficient sorting of non-orthogonal transverse-spatial states of light in up to seven dimensions. This has been made possible by employing a multi-plane light converter (MPLC) to program high-dimensional POVMs that correspond to unambiguous discrimination of the quantum states. The MPLC employs an additional auxiliary outcome that sorts the overlap of all the modes into an ambiguous outcome.
An implication of this method is that we can sort overlapping images encoded with coherent sources. We demonstrate this by sorting three smiley faces with an accuracy of 97.6%, implying accurate image classification with light!
BBQ Lab 