Results 1 to 10 of about 216,882 (284)
Entanglement Swapping and Swapped Entanglement
Entropy, 2023 Entanglement swapping is gaining widespread attention due to its application in entanglement distribution among different parts of quantum appliances. We investigate the entanglement swapping for pure and noisy systems, and argue different entanglement ...
Sultan M. Zangi +3 more
doaj +4 more sources
Comparing Quantum Entanglement and Topological Entanglement [PDF]
New Journal of Physics, 2002 This paper discusses relationships between topological entanglement and quantum entanglement. Specifically, we propose that for this comparison it is fundamental to view topological entanglements such as braids as "entanglement operators" and to associate to them unitary operators that are capable of creating quantum entanglement.
Samuel J. Lomonaco, Louis H. Kauffman
arxiv +5 more sources
Heralded entanglement distribution between two absorptive quantum memories [PDF]
Nature, 2021 Owing to the inevitable loss in communication channels, the distance of entanglement distribution is limited to approximately 100 kilometres on the ground1. Quantum repeaters can circumvent this problem by using quantum memory and entanglement swapping2.
Zong-quan Zhou, Chuan-feng Li
exaly +2 more sources
Quantifying Unknown Multiqubit Entanglement Using Machine Learning [PDF]
EntropyEntanglement 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 +4 more
doaj +2 more sources
Entanglement of nanophotonic quantum memory nodes in a telecom network [PDF]
Nature, 2023 A key challenge in realizing practical quantum networks for long-distance quantum communication involves robust entanglement between quantum memory nodes connected by fibre optical infrastructure1–3.
C. Knaut +16 more
semanticscholar +1 more source
Entanglement-Assisted Entanglement Purification [PDF]
Physical Review Letters, 2021 The efficient generation of high-fidelity entangled states is the key element for long-distance quantum communication, quantum computation and other quantum technologies, and at the same time the most resource-consuming part in many schemes. We present a new class of entanglement-assisted entanglement purification protocols that can generate high ...
Wolfgang Dür +3 more
openaire +4 more sources
Measurement-induced entanglement phase transition on a superconducting quantum processor with mid-circuit readout [PDF]
Nature Physics, 2022 Quantum many-body systems subjected to unitary evolution with the addition of interspersed measurements exhibit a variety of dynamical phases that do not occur under pure unitary evolution. However, these systems remain challenging to investigate on near-
Jin Ming Koh +3 more
semanticscholar +1 more source
Transitions in Entanglement Complexity in Random Circuits [PDF]
Quantum, 2022 Entanglement is the defining characteristic of quantum mechanics. Bipartite entanglement is characterized by the von Neumann entropy. Entanglement is not just described by a number, however; it is also characterized by its level of complexity.
Sarah True, Alioscia Hamma
doaj +1 more source
Entanglement Phase Transition Induced by the Non-Hermitian Skin Effect [PDF]
Physical Review X, 2022 Recent years have seen remarkable development in open quantum systems effectively described by non-Hermitian Hamiltonians. A unique feature of non-Hermitian topological systems is the skin effect, anomalous localization of an extensive number of ...
K. Kawabata, Tokiro Numasawa, S. Ryu
semanticscholar +1 more source
Entanglement of two quantum memories via fibres over dozens of kilometres
Nature, 2020 Yong Yu, Bo Jing, Peng-fei Sun
exaly +2 more sources