Results 11 to 20 of about 125,922 (120)

Rényi squashed entanglement, discord, and relative entropy differences [PDF]

open access: greenJournal of Physics A: Mathematical and Theoretical, 2014
The squashed entanglement quantifies the amount of entanglement in a bipartite quantum state, and it satisfies all of the axioms desired for an entanglement measure.
K. Seshadreesan, M. Berta, M. Wilde
semanticscholar   +8 more sources

Erratum to: Faithful Squashed Entanglement [PDF]

open access: bronzeCommunications in Mathematical Physics, 2012
Fernando G. S. L. Brandao1, Matthias Christandl2, Jon Yard3 1 Departamento de Fisica, Universidade Federal de Minas Gerais, Belo Horizonte, Caixa Postal 702, 30123-970 MG, Brazil. E-mail: fgslbrandao@gmail.com 2 Institute for Theoretical Physics, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8057 Zurich, Switzerland.
F. Brandão, M. Christandl, Jon Yard
semanticscholar   +4 more sources

Squashed Entanglement, $$\mathbf {k}$$k-Extendibility, Quantum Markov Chains, and Recovery Maps [PDF]

open access: greenFoundations of Physics, 2014
Squashed entanglement (Christandl and Winter in J. Math. Phys. 45(3):829–840, 2004) is a monogamous entanglement measure, which implies that highly extendible states have small value of the squashed entanglement.
Ke Li, A. Winter
semanticscholar   +9 more sources

Squashed entanglement in infinite dimensions [PDF]

open access: greenJournal of Mathematical Physics, 2015
We analyse two possible definitions of the squashed entanglement in an infinite-dimensional bipartite system: direct translation of the finite-dimensional definition and its universal extension.
M. Shirokov
semanticscholar   +7 more sources

Distributed compression and multiparty squashed entanglement [PDF]

open access: greenJournal of Physics A: Mathematical and Theoretical, 2007
We study a protocol in which many parties use quantum communication to transfer a shared state to a receiver without communicating with each other. This protocol is a multiparty version of the fully quantum Slepian–Wolf protocol for two senders and ...
D. Avis, P. Hayden, Ivan Savov
semanticscholar   +6 more sources

The Squashed Entanglement of a Quantum Channel [PDF]

open access: greenIEEE Transactions on Information Theory, 2013
This paper defines the squashed entanglement of a quantum channel as the maximum squashed entanglement that can be registered by a sender and receiver at the input and output of a quantum channel, respectively.
M. Takeoka, S. Guha, M. Wilde
semanticscholar   +6 more sources

“Squashed entanglement”: An additive entanglement measure [PDF]

open access: greenJournal of Mathematical Physics, 2003
In this paper, we present a new entanglement monotone for bipartite quantum states. Its definition is inspired by the so-called intrinsic information of classical cryptography and is given by the halved minimum quantum conditional mutual information over
M. Christandl, A. Winter
semanticscholar   +7 more sources

Faithful Squashed Entanglement [PDF]

open access: greenCommunications in Mathematical Physics, 2010
Squashed entanglement is a measure for the entanglement of bipartite quantum states. In this paper we present a lower bound for squashed entanglement in terms of a distance to the set of separable states.
F. Brandão, M. Christandl, Jon Yard
semanticscholar   +8 more sources

Squashed Entanglement for Multipartite States and Entanglement Measures Based on the Mixed Convex Roof [PDF]

open access: greenIEEE Transactions on Information Theory, 2007
New measures of multipartite entanglement are constructed based on two definitions of multipartite information and different methods of optimizing over extensions of the states.
Dong Yang   +5 more
semanticscholar   +6 more sources

The squashed entanglement of the noiseless quantum Gaussian attenuator and amplifier [PDF]

open access: greenJournal of Mathematical Physics, 2019
We determine the maximum squashed entanglement achievable between sender and receiver of the noiseless quantum Gaussian attenuators and amplifiers and we prove that it is achieved sending half of an infinitely squeezed two-mode vacuum state.
Giacomo De Palma
semanticscholar   +9 more sources

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