Results 21 to 30 of about 345,856 (326)
“Squashed entanglement”: An additive entanglement measure [PDF]
Journal of Mathematical Physics, 2004 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 all tripartite state extensions.
Christandl, Matthias, Winter, Andreas
openaire +3 more sources
Shaping contours of entanglement islands in BCFT
Journal of High Energy Physics, 2022 In this paper, we study the fine structure of entanglement in holographic two-dimensional boundary conformal field theories (BCFT) in terms of the spatially resolved quasilocal extension of entanglement entropy — entanglement contour.
Dmitry S. Ageev
doaj +1 more source
Physica Scripta, 2016 We introduce quantum history states and their mathematical framework, thereby reinterpreting and extending the consistent histories approach to quantum theory. Through thought experiments, we demonstrate that our formalism allows us to analyze a quantum version of history in which we reconstruct the past by observations. In particular, we can pass from
Cotler, Jordan S., Wilczek, Frank
openaire +4 more sources
Device-independent characterization of entanglement based on bell nonlocality
Fundamental Research, 2021 Quantum entanglement, has been acknowledged as a precious resource due to its inherent nonclassical correlations between subsystems. These quantum correlations have the potential for many quantum processes, including canonical ones: quantum cryptography,
Geng Chen +4 more
doaj +1 more source
Is `entanglement' always entangled? [PDF]
Journal 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 +2 more sources
Entanglement classification via operator size
SciPost Physics Core, 2023 In this work, multipartite entanglement is classified by polynomials. I show that the operator size is closely related to the entanglement structure. Given a generic quantum state, I define a series of subspaces generated by operators of different sizes ...
Qi-Feng Wu
doaj +1 more source
Irreversibility in asymptotic manipulations of entanglement [PDF]
, 2001 We show that the process of entanglement distillation is irreversible by showing that the entanglement cost of a bound entangled state is finite. Such irreversibility remains even if extra pure entanglement is loaned to assist the distillation process ...
A. Uhlmann +23 more
core +2 more sources
Genuine multipartite entanglement measures based on multi-party teleportation capability
Scientific Reports, 2023 Quantifying entanglement is vital to understand entanglement as a resource in quantum information processing, and many entanglement measures have been suggested for this purpose.
Minjin Choi, Eunok Bae, Soojoon Lee
doaj +1 more source
Partial-norm of entanglement: entanglement monotones that are not monogamous
New 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
Delayed (sudden) birth of entanglement [PDF]
, 2008 The concept of time delayed creation of entanglement by the dissipative process of spontaneous emission is investigated. A threshold effect for the creation of entanglement is found that the initially unentangled qubits can be entangled after a finite ...
Ficek, Z., Tanas, R.
core +2 more sources