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Andreas Winter
Researcher at Autonomous University of Barcelona
Publications - 425
Citations - 25110
Andreas Winter is an academic researcher from Autonomous University of Barcelona. The author has contributed to research in topics: Quantum & Quantum entanglement. The author has an hindex of 71, co-authored 407 publications receiving 21729 citations. Previous affiliations of Andreas Winter include Bielefeld University & Massachusetts Institute of Technology.
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The Quantum Entropy Cone of Stabiliser States
TL;DR: It is demonstrated here that entropy vectors for stabiliser states satisfy, in addition to the classic inequalities, a type of linear rank inequalities associated with the combinatorial structure of normal subgroups of certain matrix groups.
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On environment-assisted capacities of quantum channels
TL;DR: It is shown that a lower bound on the environment-assisted classical capacity is always half the logarithm of the input space dimension, and a few techniques are developed to prove the existence of channels which meet this lower bound up to terms of much smaller order, even when PPT decoding measurements are allowed.
Journal ArticleDOI
Quantum state cloning using Deutschian closed timelike curves.
TL;DR: It is shown that it is possible to clone quantum states to arbitrary accuracy in the presence of a Deutschian closed timelike curve (D-CTC), with a fidelity converging to one in the limit as the dimension of the CTC system becomes large--thus resolving an open conjecture.
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Quantum Rate-Distortion Coding With Auxiliary Resources
TL;DR: The result here is that the regularized entanglement of formation characterizes the quantum rate-distortion function, extending earlier work of Devetak and Berger and combining this bound with theEntanglement-assisted bound from their prior work to obtain the best known bounds on the quantum Rate-Distortion function for an isotropic qubit source.
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Entropic proofs of Singleton bounds for quantum error-correcting codes.
TL;DR: This work proves the correct generalized quantum Singleton bound, extending the above-mentioned proof method for QECC; it proves information-theoretically tight bounds on the entanglement-communication tradeoff for EAQECC and provides a propagation rule.