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Quantum Limits of Passive Optical Surface Metrology and Defect Detection

We develop a quantum statistical framework for passive optical surface metrology. Modelling a surface as an incoherent ensemble of point emitters imaged through a diffraction-limited system, we…
arXiv (opens in a new tab)

Thermal state quantum key distribution

In a lossless system, it is found that a lower bound on the key rate remains positive in the protocol under a beam splitter attack, suggesting that the thermal state protocol could be used experimentally to produce secure keys.
IOP Publishing (opens in a new tab)
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