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Entanglement at distance: qubits versus continuous variables

G. M. D'Ariano·M. F. Sacchi
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Abstract

We consider the problem of obtaining maximally entangled photon states at distance in the presence of loss. We compare the efficiency of two different schemes in establishing $N$ shared ebits: i) $N$ single ebit states with the qubit encoded on polarization; ii) a single continuous variable entangled state (emode) assisted by optimal local operation and classical communication (LOCC) protocol in order to obtain a $2^N$-dimensional maximally entangled state, with qubits encoded on the photon number.

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G. M. D'Ariano, M. F. Sacchi. 2002-05-13. Entanglement at distance: qubits versus continuous variables. https://doi.org/10.1002/prop.200310064

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