All-optical-fiber polarization-based quantum logic gate


Clark, A. S., Fulconis, J., Rarity, J. G., Wadsworth, W. J. and O'Brien, J. L., 2009. All-optical-fiber polarization-based quantum logic gate. Physical Review A: Atomic, Molecular, and Optical Physics, 79 (3), 030303.

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We report an experimental demonstration of a quantum controlled-NOT gate constructed entirely in optical fiber and operating on polarization-encoded single-photon qubits. We operated this gate using two heralded optical fiber single-photon sources and found 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. Such all fiber quantum information processing will likely have important applications in future quantum networks.


Item Type Articles
CreatorsClark, A. S., Fulconis, J., Rarity, J. G., Wadsworth, W. J. and O'Brien, J. L.
Related URLs
DepartmentsFaculty of Science > Physics
Research CentresCentre for Photonics and Photonic Materials
ID Code14155


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