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Trapped Ion Quantum Computing

Measurement-device-independent quantification of entanglement for given Hilbert space dimension

arXiv
Authors: Koon Tong Goh, Jean-Daniel Bancal, Valerio Scarani

Year

2015

Paper ID

26987

Status

Preprint

Abstract Read

~2 min

Abstract Words

112

Citations

N/A

Abstract

We address the question of how much entanglement can be certified from the observed correlations and the knowledge of the Hilbert space dimension of the measured systems. We focus on the case in which both systems are known to be qubits. For several correlations (though not for all), one can certify the same amount of entanglement as with state tomography, but with fewer assumptions, since nothing is assumed about the measurements. We also present security proofs of quantum key distribution without any assumption on the measurements. We discuss how both the amount of entanglement and the security of quantum key distribution (QKD) are affected by the inefficiency of detectors in this scenario.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2015 reference point for readers tracking recent quantum research.
  • We address the question of how much entanglement can be certified from the observed correlations and the knowledge of the Hilbert space dimension of the measured systems.

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