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Aspects of Holographic Entanglement Entropy [PDF]

open access: yes, 2006
This is an extended version of our short report [1], where a holographic interpretation of entanglement entropy in conformal field theories is proposed from AdS/CFT correspondence.
S. Ryu, T. Takayanagi
semanticscholar   +1 more source

Measurement-driven entanglement transition in hybrid quantum circuits [PDF]

open access: yesPhysical review B, 2019
Quantum information tends to spread out in interacting systems, leading to thermalization as characterized by the volume-law entropy of entanglement, while local measurements that extract classical information of the state tend to interrupt the ...
Yaodong Li, Xiao Chen, M. Fisher
semanticscholar   +1 more source

Symmetry-resolved entanglement detection using partial transpose moments [PDF]

open access: yesnpj Quantum Information, 2021
We propose an ordered set of experimentally accessible conditions for detecting entanglement in mixed states. The k -th condition involves comparing moments of the partially transposed density operator up to order k .
A. Neven   +10 more
semanticscholar   +1 more source

Is `entanglement' always entangled? [PDF]

open access: yesJournal of Optics B: Quantum and Semiclassical Optics, 2002
Entanglement, including ``quantum entanglement,'' is a consequence of correlation between objects. When the objects are subunits of pairs which in turn are members of an ensemble described by a wave function, a correlation among the subunits induces the mysterious properties of ``cat-states.'' However, correlation between subsystems can be present from
openaire   +3 more sources

Multipartite entanglement for entanglement teleportation [PDF]

open access: yesPhysical Review A, 2002
The scheme for entanglement teleportation is proposed to incorporate multipartite entanglement of four qubits as a quantum channel. Based on the invariance of entanglement teleportation under arbitrary two-qubit unitary transformation, we derive relations of separabilities for joint measurements at a sending station and for unitary operations at a ...
Sung Dahm Oh   +3 more
openaire   +3 more sources

Partial-norm of entanglement: entanglement monotones that are not monogamous

open access: yesNew Journal of Physics, 2023
Quantum entanglement is known to be monogamous, i.e. it obeys strong constraints on how the entanglement can be distributed among multipartite systems. Almost all the entanglement monotones so far are shown to be monogamous.
Yu Guo
doaj   +1 more source

Measurement-device-independent nonlinear entanglement witnesses [PDF]

open access: yes, 2021
Entanglement witnesses are one of the most effective methods to detect entanglement. It is known that nonlinear entanglement witnesses provide better entanglement detection than their linear counterparts, in that the former detect a strictly larger subset of entangled states than the latter. Whether linear or nonlinear, the method is measurement-device
arxiv   +1 more source

Meeting the Universe Halfway: Quantum Physics and the Entanglement of Matter and Meaning

open access: yes, 2007
Meeting the Universe Halfway is an ambitious book with far-reaching implications for numerous fields in the natural sciences, social sciences, and humanities. In this volume, Karen Barad, theoretical physicist and feminist theorist, elaborates her theory
Karen Barad
semanticscholar   +1 more source

Entanglement Induced Barren Plateaus [PDF]

open access: yesPRX Quantum, 2020
We argue that an excess in entanglement between the visible and hidden units in a Quantum Neural Network can hinder learning. In particular, we show that quantum neural networks that satisfy a volume-law in the entanglement entropy will give rise to ...
Carlos Ortiz Marrero   +2 more
semanticscholar   +1 more source

Characterizing long-range entanglement in a mixed state through an emergent order on the entangling surface

open access: yesPhysical Review Research, 2023
Topologically-ordered phases of matter at nonzero temperature are conjectured to exhibit universal patterns of long-range entanglement, which can be detected using the entanglement negativity, a mixed-state entanglement measure.
Tsung-Cheng Lu, Sagar Vijay
doaj   +1 more source

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