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arXiv · 0802.1676

An All Optical Fibre Quantum Controlled-NOT Gate

Alex S. Clark·Jeremie Fulconis·John G. Rarity·William J. Wadsworth·Jeremy L. O'Brien
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Abstract

We report the first experimental demonstration of an optical controlled-NOT gate constructed entirely in fibre. We operate the gate using two heralded optical fibre single photon sources and find an average logical fidelity of 90% and an average process fidelity of 0.83<F<0.91. On the basis of a simple model we are able to conclude that imperfections are primarily due to the photon sources, meaning that the gate itself works with very high fidelity.

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Alex S. Clark, Jeremie Fulconis, John G. Rarity, William J. Wadsworth, Jeremy L. O'Brien. 2008-02-12. An All Optical Fibre Quantum Controlled-NOT Gate. https://doi.org/10.1103/physreva.79.030303

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