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arXiv · 1503.01215

Active Temporal Multiplexing of Photons

Gabriel J. Mendoza·Raffaele Santagati·Jack Munns·Elizabeth Hemsley·Mateusz Piekarek·Enrique Martin-Lopez·Graham D. Marshall·Damien Bonneau·Mark G. Thompson·Jeremy L. O'Brien
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Abstract

Photonic qubits constitute a leading platform to disruptive quantum technologies due to their unique low-noise properties. The cost of the photonic approach is the non-deterministic nature of many of the processes, including single-photon generation, which arises from parametric sources and negligible interaction between photons. Active temporal multiplexing - repeating a generation process in time and rerouting to single modes using an optical switching network - is a promising approach to overcome this challenge and will likely be essential for large-scale applications with greatly reduced resource complexity and system sizes. Requirements include the precise synchronization of a system of low-loss switches, delay lines, fast photon detectors, and feed-forward. Here we demonstrate temporal multiplexing of 8 'bins' from a double-passed heralded photon source and observe an increase in the heralding and heralded photon rates. This system points the way to harnessing temporal multiplexing in quantum technologies, from single-photon sources to large-scale computation.

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Gabriel J. Mendoza, Raffaele Santagati, Jack Munns, Elizabeth Hemsley, Mateusz Piekarek, Enrique Martin-Lopez, Graham D. Marshall, Damien Bonneau, Mark G. Thompson, Jeremy L. O'Brien. 2015-03-04. Active Temporal Multiplexing of Photons. https://arxiv.org/abs/1503.01215

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