Results 1 to 10 of about 94,279 (316)

Device-independent characterization of entanglement based on bell nonlocality

open access: yesFundamental 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

Genuine multipartite entanglement measures based on multi-party teleportation capability

open access: yesScientific 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

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

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

Entanglement classification via operator size

open access: yesSciPost 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

Multipartite entanglement of billions of motional atoms heralded by single photon

open access: yesnpj Quantum Information, 2021
Quantum theory does not prevent entanglement from being created and observed in macroscopic physical systems, in reality however, the accessible scale of entanglement is still very limited due to decoherence effects.
Hang Li   +8 more
doaj   +1 more source

Calculating preventable risk fractions for exposure-reducing interventions

open access: yesGlobal Epidemiology
How can causal models be used to quantify the fractions of risk associated with environmental and occupational exposures that would be prevented by reducing exposures by different amounts? This paper provides a constructive answer.
Louis Anthony Cox, Jr.
doaj   +1 more source

An AI assistant to help review and improve causal reasoning in epidemiological documents

open access: yesGlobal Epidemiology
Drawing sound causal inferences from observational data is often challenging for both authors and reviewers. This paper discusses the design and application of an Artificial Intelligence Causal Research Assistant (AIA) that seeks to help authors improve ...
Louis Anthony Cox, Jr.
doaj   +1 more source

Challenging unverified assumptions in causal claims: Do gas stoves increase risk of pediatric asthma?

open access: yesGlobal Epidemiology
The use of unverified models for risk estimates and policy recommendations can be highly misleading, as their predictions may not reflect real-world health impacts.
Louis Anthony Cox, Jr.
doaj   +1 more source

Entanglement polygon inequality in qubit systems

open access: yesNew Journal of Physics, 2018
We prove a set of tight entanglement inequalities for arbitrary N -qubit pure states. By focusing on all bi-partite marginal entanglements between each single qubit and its remaining partners, we show that the inequalities provide an upper bound for each
Xiao-Feng Qian   +2 more
doaj   +1 more source

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