The ability to control light polarization state is critically important for diverse applications in information processing, telecommunications, and spectroscopy. Here, we propose that a stack of anisotropic van der Waals materials can facilitate the building of optical elements with Jones matrices of unitary, Hermitian, non-normal, singular, degenerate, and defective classes. We show that the twisted stack with electrostatic control can function as arbitrary-birefringent wave-plate or arbitrary polarizer with tunable degree of non-normality, which in turn give access to plethora of polarization transformers including rotators, pseudorotators, symmetric and ambidextrous polarizers. Moreover, we discuss an electrostatic-reconfigurable stack which can be tuned to operate as four different polarizers and be used for Stokes polarimetry.
@article{arxiv.2110.02299,
title = {Twisted two-dimensional material stacks for polarization optics},
author = {Kaveh Khaliji and Luis Martin-Moreno and Phaedon Avouris and Sang-Hyun Oh and Tony Low},
journal= {arXiv preprint arXiv:2110.02299},
year = {2023}
}