We show for the first time how deterministic unitary operations on time-bin qubits encoded in single photon pulses can be realized using fiber optics components that are available with current technology. We also generalize this result to operations on time-bin qudits, i.e. d-level systems, and show that this can be done efficiently using 2×2 beamsplitters and phase modulators. Important benefits for experimental quantum communication are highlighted. This work shows how to bridge the gap between current proof-of-principle demonstrations and complete, deterministic experiments.
@article{arxiv.quant-ph/0608183,
title = {Deterministic unitary operations on time-bin qudits for quantum communication},
author = {Felix Bussieres and Yasaman Soudagar and Guido Berlin and Suzanne Lacroix and Nicolas Godbout},
journal= {arXiv preprint arXiv:quant-ph/0608183},
year = {2007}
}