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Multi-particle entanglement manipulation under positive partial transpose preserving operations
Satoshi Ishizaka, Martin B. Plenio
We consider the transformation of multi-partite states in the single copy setting under positive-partial-transpose-preserving operations (PPT-operations) and obtain both qualitativ…
Classical simulatability, entanglement breaking, and quantum computation thresholds
S. Virmani, Susana F. Huelga, Martin B. Plenio
We investigate the amount of noise required to turn a universal quantum gate set into one that can be efficiently modelled classically. This question is useful for providing upper…
Quantum information and triangular optical lattices
Alastair Kay, Derek K. K. Lee, Jiannis K. Pachos +3
The regular structures obtained by optical lattice technology and their behaviour are analysed from the quantum information perspective. Initially, we demonstrate that a triangular…
Local copying of orthogonal entangled quantum states
Fabio Anselmi, Anthony Chefles, Martin B. Plenio
In classical information theory one can, in principle, produce a perfect copy of any input state. In quantum information theory, the no cloning theorem prohibits exact copying of n…
High efficiency transfer of quantum information and multi-particle entanglement generation in translation invariant quantum chains
Martin B Plenio, Fernando L Semiao
We demonstrate that a translation invariant chain of interacting quantum systems can be used for high efficiency transfer of quantum entanglement and the generation of multi-partic…
Entropy, entanglement, and area: analytical results for harmonic lattice systems
M. B. Plenio, J. Eisert, J. Dreissig +1
We revisit the question of the relation between entanglement, entropy, and area for harmonic lattice Hamiltonians corresponding to discrete versions of real free Klein-Gordon field…