Entanglement fidelity of quantum memories

We introduce a figure of merit for a quantum memory which measures the preservation of entanglement between a qubit stored in and retrieved from the memory and an auxiliary qubit. We consider a general quantum memory system consisting of a medium of two level absorbers, with the qubit to be stored e...

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Hlavní autoři: Surmacz, K, Nunn, J, Waldermann, F, Wang, Z, Walmsley, I, Jaksch, D
Médium: Journal article
Jazyk:English
Vydáno: 2006