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 2N -dimensional maximally entangled state, with qubits encoded on the photon number.
Entanglement at distance: qubits versus continuous variables
M F Sacchi
2003
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 2N -dimensional maximally entangled state, with qubits encoded on the photon number.File in questo prodotto:
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