57 citations · 227 across the 8 of their papers we have counts for
8 papers
Optimal probes for continuous variable quantum illumination
Mark Bradshaw, Lorcan O. Conlon, Spyros Tserkis +3
Quantum illumination is the task of determining the presence of an object in a noisy environment. We determine the optimal continuous variable states for quantum illumination in th…
Gaussian multipartite quantum discord from classical mutual information
Mark Bradshaw, Ping Koy Lam, Syed M. Assad
Quantum discord is a measure of non-classical correlations, which are excess correlations inherent in quantum states that cannot be accessed by classical measurements. For multipar…
Quantum enhancement of signal-to-noise ratio with a heralded linear amplifier
Jie Zhao, Josephine Dias, Jing Yan Haw +6
Due to the pervasive nature of decoherence, protection of quantum information during transmission is of critical importance for any quantum network. A linear amplifier that can enh…
Ultimate precision of joint quadrature parameter estimation with a Gaussian probe
Mark Bradshaw, Ping Koy Lam, Syed M. Assad
The Holevo Cramér Rao bound is a lower bound on the sum of the mean square error of estimates for parameters of a state. We provide a method for calculating the Holevo Cramér-Rao b…
A tight Cramér-Rao bound for joint parameter estimation with a pure two-mode squeezed probe
Mark Bradshaw, Syed M Assad, Ping Koy Lam
We calculate the Holevo Cramér-Rao bound for estimation of the displacement experienced by one mode of an two-mode squeezed vacuum state with squeezing r and find that it is equal…
Overarching framework between Gaussian quantum discord and Gaussian quantum illumination
Mark Bradshaw, Syed M. Assad, Jing Yan Haw +3
We cast the problem of illuminating an object in a noisy environment into a communication protocol. A probe is sent into the environment, and the presence or absence of the object…