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arxiv: 1608.00114 · v3 · pith:6BBWMX5Onew · submitted 2016-07-30 · 🪐 quant-ph

Measurement-device-independent quantum secret sharing

classification 🪐 quant-ph
keywords measurement-device-independententanglementmdi-ewmdi-qssquantumsecretsharingsource
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Measurement-device-independent entanglement witness (MDI-EW) will always give an affirmative certification for witnessing entanglement with untrusted measurement apparatuses. Using the MDI-EW method, we propose a measurement-device-independent quantum secret sharing (MDI-QSS) protocol that Charlie can securely distribute a key between the two agents Alice and Bob. A tight bound for collective attacks can provide good bounds on the long-distance MDI-QSS with source flaws. Then we show through numerical simulations that using single-photon source a secure QSS over 136 km can be achieved.

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