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8 papers · 2 filters
Geometric Entanglement of Symmetric States and the Majorana Representation
Martin Aulbach, Damian Markham, Mio Murao
Permutation-symmetric quantum states appear in a variety of physical situations, and they have been proposed for quantum information tasks. This article builds upon the results of…
Measurement Based Quantum Computation on Fractal Lattices
Damian Markham, Janet Anders, Michal Hajdušek +1
In this article we extend on work which establishes an analology between one-way quantum computation and thermodynamics to see how the former can be performed on fractal lattices.…
Finite-size analysis of continuous-variable quantum key distribution
Anthony Leverrier, Frédéric Grosshans, Philippe Grangier
The goal of this paper is to extend the framework of finite size analysis recently developed for quantum key distribution to continuous-variable protocols. We do not solve this pro…
Long distance quantum key distribution with continuous variables
Anthony Leverrier, Philippe Grangier
We present a continuous-variable quantum key distribution protocol combining a continuous but slightly non-Gaussian modulation together with a efficient reverse reconciliation sche…
Quantum secret sharing with qudit graph states
Adrian Keet, Ben Fortescue, Damian Markham +1
We present a unified formalism for threshold quantum secret sharing using graph states of systems with prime dimension. We construct protocols for three varieties of secret sharing…
The maximally entangled symmetric state in terms of the geometric measure
Martin Aulbach, Damian Markham, Mio Murao
The geometric measure of entanglement is investigated for permutation symmetric pure states of multipartite qubit systems, in particular the question of maximum entanglement. This…