688 citations · 2.9k across the 20 of their papers we have counts for
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physics.optics2012★ 124 cited
All linear optical devices are mode converters
David A. B. Miller
We show that every linear optical component can be completely described as a device that converts one set of orthogonal input modes, one by one, to a matching set of orthogonal out…
physics.optics2012★ 47 cited
How complicated must an optical component be?
David A. B. Miller
We analyze how complicated a linear optical component has to be if it is to perform one of a range of functions. Specifically, we devise an approach to evaluating the number of rea…