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Open Quantum Systems Decoherence Entanglement Theory Quantum Correlations

How Discord underlies the Noise Resilience of Quantum Illumination

arXiv
Authors: Christian Weedbrook, Stefano Pirandola, Jayne Thompson, Vlatko Vedral, Mile Gu

Year

2013

Paper ID

31471

Status

Preprint

Abstract Read

~2 min

Abstract Words

92

Citations

N/A

Abstract

The benefits of entanglement can outlast entanglement itself. In quantum illumination, entanglement is employed to better detect reflecting objects in environments so noisy that all entanglement is destroyed. Here, we show that quantum discord - a more resilient form of quantum correlations - explains the resilience of quantum illumination. We introduce a quantitative relation between the performance gain in quantum illumination and the amount of discord used to encode information about the presence or absence of a reflecting object. This highlights discord's role preserving the benefits of entanglement in entanglement breaking noise.

Why This Paper Matters

  • This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
  • It adds a 2013 reference point for readers tracking recent quantum research.
  • The benefits of entanglement can outlast entanglement itself.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1312.3332 [2] arXiv https://arxiv.org/abs/1312.3332 [3] Publisher https://arxiv.org/abs/1312.3332

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