Results 91 to 100 of about 123,258 (197)

Generalizing entanglement [PDF]

Physical Review A, 2017
The expected indefinite causal structure in quantum gravity poses a challenge to the notion of entanglement: If two parties are in an indefinite causal relation of being spacelike and timelike, can they still be entangled? If so, how does one measure the amount of entanglement?
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Distillable entanglement under dually non-entangling operations

Nature Communications
Computing the exact rate at which entanglement can be distilled from noisy quantum states is one of the longest-standing questions in quantum information. We give an exact solution for entanglement distillation under the set of dually non-entangling (DNE)
Ludovico Lami, Bartosz Regula
doaj   +1 more source

A method for evaluating microwaves entanglement efficiency based on second-order correlation detection

Results in Physics, 2019
A method for evaluating the entanglement efficiency of dual-path entangled microwaves based on second-order correlation detection is proposed in this paper.
Tianli Wei, Dewei Wu, Xiang Li, Qiang Miao, Junwen Luo, Chunyan Yang   +5 more
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The Logic of Entanglement

, 2014
We expose the information flow capabilities of pure bipartite entanglement as a theorem -- which embodies the exact statement on the `seemingly acausal flow of information' in protocols such as teleportation. We use this theorem to re-design and analyze known protocols (e.g.
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Entanglement of assistance as a measure of multiparty entanglement

Physical Review A
Quantifying multipartite entanglement poses a significant challenge in quantum information theory, prompting recent advancements in methodologies to assess it. We introduce the notion of \enquote{Volume of Assistance} (VoA), which computes the geometric mean of entanglement of assistance across all potential parties.
Indranil Biswas, Atanu Bhunia, Subrata Bera, Indrani Chattopadhyay, Debasis Sarkar   +4 more
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A brand new strategy of quantum relay strategy based on entanglement swapping

Dianxin kexue, 2016
Quantum protocols based on entanglement are known as information security，reliability，flexibility and a broad prospect in use.Meanwhile，the fidelity of photons is also required.A new quantum relay strategy was proposed.By setting multi-relays between ...
Min XU, Min NIE, Guang YANG, Changxing PEI   +3 more
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Measuring statistics-induced entanglement entropy with a Hong–Ou–Mandel interferometer

Nature Communications
Despite its ubiquity in quantum computation and quantum information, a universally applicable definition of quantum entanglement remains elusive. The challenge is further accentuated when entanglement is associated with other key themes, e.g., quantum ...
Gu Zhang, Changki Hong, Tomer Alkalay, Vladimir Umansky, Moty Heiblum, Igor Gornyi, Yuval Gefen   +6 more
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Direct and Indirect Coupling Entanglements in an Optomechanical Cavity Coupled to a Rydberg Superatom

Photonics
We investigate steady-state entanglement in a hybrid optomechanical cavity coupled to a Rydberg atomic ensemble confined within a single blockade region. The ensemble behaves as one superatom due to the rigid dipole blockade effect.
Dong Yan, Feifan Ren, Lei Huang, Yilongyue Guo, Jing Wang, Kaihui Gu, Hanxiao Zhang   +6 more
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Second Law of Entanglement Manipulation with an Entanglement Battery

Physical Review Letters
accepted version in PRL; 6+10 pages, 2 figures; changes from v1: rewritten introduction, added appendix on batteries constrained with multiple ...
Ray Ganardi, Tulja Varun Kondra, Nelly H. Y. Ng, Alexander Streltsov   +3 more
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Quantifying Unknown Multiqubit Entanglement Using Machine Learning

Entropy
Entanglement plays a pivotal role in numerous quantum applications, and as technology progresses, entanglement systems continue to expand. However, quantifying entanglement is a complex problem, particularly for multipartite quantum states. The currently
Yukun Wang, Shaoxuan Wang, Jincheng Xing, Yuxuan Du, Xingyao Wu   +4 more
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