High-fidelity Greenberger-Horne-Zeilinger state generation within nearby nodes
V. Caprara Vivoli (TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Wehner Group)
Jérémy Ribeiro (TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Wehner Group)
S. Wehner (TU Delft - QuTech Advanced Research Centre, TU Delft - Quantum Internet Division, TU Delft - Quantum Information and Software)
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Abstract
Generating entanglement in a distributed scenario is a fundamental task for implementing the quantum network of the future. We here report a protocol that uses only linear optics for generating Greenberger-Horne-Zeilinger states with high fidelities in a nearby node configuration. Moreover, we analytically show that the scheme is optimal for certain initial states in providing the highest success probability for sequential protocols. Finally, we give some estimates for the generation rate in a real scenario.
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