Quantum teleportation between polarized single-photon and phase-opposite coherent states is studied using a hybrid entangled resource and entangled coherent states. The polarized single-photon qubit represents a discrete-variable (DV) quantum system, whereas the phase-opposite coherent-state qubit constitutes a continuous-variable (CV) system. While teleportation from CV to DV can be achieved with near-unit success probability, the reverse process is usually limited to a maximum success probability of 1/2. We demonstrate that, by employing cross-Kerr nonlinearity together with passive linear optical components such as polarizing beam splitters, beam splitters, and phase shifters, almost perfect teleportation from DV to CV encodings can also be achieved.
@article{arxiv.2602.17306,
title = {Near-perfect quantum teleportation between continuous and discrete encodings},
author = {Ravi Kamal Pandey and Shraddha Singh and Dhiraj Yadav and Devendra Kumar Mishra},
journal= {arXiv preprint arXiv:2602.17306},
year = {2026}
}