Distilling Quantum Entanglement via Mode-Matched Filtering

Details Distilling Quantum Entanglement via Mode-Matched Filtering Distilling Quantum Entanglement via Mode-Matched Filtering

2011-08-23

arxiv.org/abs/1108.4699v1

Physics

Quantum Physics

6 pages, 2 figures, to appear in Phys. Rev. A

Scientific paper

We propose a new avenue towards distillation of quantum entanglement that is implemented by directly passing the entangled qubits through a mode-matched filter. This approach can be applied to a common class of entanglement impurities appearing in photonic systems where the impurities inherently occupy different spatiotemporal modes than the entangled qubits. As a specific application, we show that our method can be used to significantly purify the telecom-band entanglement generated via the Kerr nonlinearity in single-mode fibers where a substantial amount of Raman-scattering noise is concomitantly produced.

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