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Quantum secret sharing using pseudo-GHZ states

W. Tittel, H. Zbinden, N. Gisin

quant-pharXiv:quant-ph/9912035

Abstract

We present a setup for quantum secret sharing using pseudo-GHZ states based on energy-time entanglement. In opposition to true GHZ states, our states do not enable GHZ-type tests of nonlocality, however, they bare the same quantum correlations. The relatively high coincidence count rates found in our setup enable for the first time an application of a quantum communication protocoll based on more than two qubits.

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