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Deterministic unitary operations on time-bin qudits for quantum communication

Felix Bussieres·Yasaman Soudagar·Guido Berlin·Suzanne Lacroix·Nicolas Godbout
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Abstract

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$\times$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.

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Felix Bussieres, Yasaman Soudagar, Guido Berlin, Suzanne Lacroix, Nicolas Godbout. 2006-08-23. Deterministic unitary operations on time-bin qudits for quantum communication. https://arxiv.org/abs/quant-ph/0608183

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