We propose an integrated photonics device for mapping qubits encoded in the polarization of a photon onto the spin state of a solid-state defect coupled to a photonic crystal cavity: a `Polarization-Encoded Photon-to-Spin Interface' (PEPSI). We perform a theoretical analysis of the state fidelity's dependence on the device's polarization extinction ratio and atom-cavity cooperativity. Furthermore, we explore the rate-fidelity trade-off through analytical and numerical models. In simulation, we show that our design enables efficient, high fidelity photon-to-spin mapping.
@article{arxiv.2004.02381,
title = {A Polarization Encoded Photon-to-Spin Interface},
author = {Kevin C. Chen and Eric Bersin and Dirk Englund},
journal= {arXiv preprint arXiv:2004.02381},
year = {2021}
}