Proof-of-principle demonstration of measurement-device-independent quantum key distribution using polarization qubits

T. Ferreira da Silva; D. Vitoreti; G. B. Xavier; G. C. do Amaral; G. P. Temporão; J. P. von der Weid

doi:10.1103/PhysRevA.88.052303

Proof-of-principle demonstration of measurement-device-independent quantum key distribution using polarization qubits

Quantum Physics 2013-11-13 v3

Authors: T. Ferreira da Silva , D. Vitoreti , G. B. Xavier , G. C. do Amaral , G. P. Temporão , J. P. von der Weid

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Abstract

We perform a proof-of-principle demonstration of the measurement-device-independent quantum key distribution (MDI-QKD) protocol using weak coherent states and polarization-encoded qubits over two optical fiber links of 8.5 km each. Each link was independently stabilized against polarization drifts using a full-polarization control system employing two wavelength-multiplexed control channels. A linear-optics-based polarization Bell-state analyzer was built into the intermediate station, Charlie, which is connected to both Alice and Bob via the optical fiber links. Using decoy-states, a lower bound for the secret-key generation rate of 1.04x10^-6 bits/pulse is computed.

Keywords

measurement-device-independent qkd quantum key distribution polarization qubits weak coherent states optical fiber links bell-state analyzer decoy-states secret-key rate

Cite

@article{arxiv.1207.6345,
  title  = {Proof-of-principle demonstration of measurement-device-independent quantum key distribution using polarization qubits},
  author = {T. Ferreira da Silva and D. Vitoreti and G. B. Xavier and G. C. do Amaral and G. P. Temporão and J. P. von der Weid},
  journal= {arXiv preprint arXiv:1207.6345},
  year   = {2013}
}

Proof-of-principle demonstration of measurement-device-independent quantum key distribution using polarization qubits

Abstract

Keywords

Cite

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