316 citations · 944 across the 13 of their papers we have counts for
14 papers
Device-independent quantum key distribution with generalized two-mode Schrödinger cat states
Curtis J. Broadbent, Kevin Marshall, Christian Weedbrook +1
We show how weak non-linearities can be used in a device-independent quantum key distribution (QKD) protocol using generalized two-mode Schrödinger cat states. The QKD protocol is…
Uncertainty Relation for Mutual Information
James Schneeloch, Curtis J. Broadbent, John C. Howell
We postulate the existence of a universal uncertainty relation between the quantum and classical mutual informations between pairs of quantum systems. Specifically, we propose that…
Bounding the entanglement of N qubits with only four measurements
S. M. Hashemi Rafsanjani, C. J. Broadbent, J. H. Eberly
We introduce a new measure for the genuinely N-partite (all-party) entanglement of N-qubit states using the trace distance metric, and find an algebraic formula for the GHZ-diagona…
Improving Einstein-Podolsky-Rosen Steering Inequalities with State Information
James Schneeloch, Curtis J. Broadbent, John C. Howell
We discuss the relationship between entropic Einstein-Podolsky-Rosen (EPR)-steering inequalities and their underlying uncertainty relations, along with the hypothesis that improved…
EPR Steering Inequalities from Entropic Uncertainty Relations
James Schneeloch, Curtis J. Broadbent, Stephen P. Walborn +2
We use entropic uncertainty relations to formulate inequalities that witness Einstein-Podolsky-Rosen (EPR) steering correlations in diverse quantum systems. We then use these inequ…
Bell violation for unknown continuous-variable states
X. -F. Qian, C. J. Broadbent, J. H. Eberly
We describe a new Bell test for two-particle entangled systems that engages an unbounded continuous variable. The continuous variable state is allowed to be arbitrary and inaccessi…