Results 51 to 60 of about 457,528 (172)
Entanglement versus energy in quantum spin models [PDF]
, 2004 We study entanglement properties of all eigenstates of the Heisenberg XXX model, and find that the entanglement and mixedness for a pair of nearest-neighbor qubits are completely determined by the corresponding eigenenergies. Specifically, the negativity of the eigenenergy implies pairwise entanglement.
arxiv +1 more source
Composability of partially entanglement breaking channels via entanglement assisted local operations and classical communication [PDF]
Phys. Rev. A 88, 064301 (2013), 2013 We consider composability of quantum channels from a limited amount of entanglement via local operations and classical communication (LOCC). We show that any $k$-partially entanglement breaking channel can be composed from an entangled state with Schmidt number of $k$ via one-way LOCC.
arxiv +1 more source
Entanglement engineering of optomechanical systems by reinforcement learning
APL Machine LearningEntanglement is fundamental to quantum information science and technology, yet controlling and manipulating entanglement—so-called entanglement engineering—for arbitrary quantum systems remains a formidable challenge.
Li-Li Ye +3 more
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Detecting Entanglement-Generating Circuits in Cloud-Based Quantum Computing
Intelligent Computing, 2023 Entanglement, which is a direct consequence of elementary quantum gates such as controlled-NOT and Toffoli, is a key resource that provides quantum advantages.
Jiheon Seong, Joonwoo Bae
doaj +1 more source
Planar two-region multi-partite maximally entangled states [PDF]
Results in Physics 60 (2024) 107793In entanglement theory, there are different methods to consider one state being more entangled than another. The "maximally" entangled states in a multipartite system can be defined from an axiomatic perspective. According to different criteria for selection, there are many specific types of quantum maximally entangled states, such as absolutely ...
arxiv +1 more source
Nonmaximally-entangled-state quantum photolithography [PDF]
J. Opt. B: Quantum Semiclass. Opt. 5 (2003) 405-408, 2004 Many previous works on quantum photolithography are based on maximally-entangled states (MES). In this paper, we generalize the MES quantum photolithography to the case where two light beams share a $N$-photon nonmaximally-entangled state. we investigate the correlations between quantum entanglement and quantum photolithography.
arxiv +1 more source
Entanglement formation in continuous-variable random quantum networks
npj Quantum Information, 2021 Entanglement is not only important for understanding the fundamental properties of many-body systems, but also the crucial resource enabling quantum advantages in practical information processing tasks.
Bingzhi Zhang, Quntao Zhuang
doaj +1 more source
Entanglement-breaking of quantum dynamical channels [PDF]
Quantum Information Processing,July 2019, 18:231, 2019 Entanglement is a key issue in the quantum physics which gives rise to resources for achieving tasks that are not possible within the realm of classical physics. Quantum entanglement varies with the evolution of the quantum systems. It is of significance to investigate the entanglement dynamics in terms of quantum channels.
arxiv +1 more source
Entanglement fidelity and measure of entanglement [PDF]
arXiv, 2019 The notion of entanglement fidelity is to measure entanglement preservation through quantum channels. Nevertheless, the amount of entanglement present in a state of a quantum system at any time is measured by quantities known as measures of entanglement.
arxiv
Physical Review ResearchQuantum algorithms reformulate computational problems as quantum evolutions in a large Hilbert space. Most quantum algorithms assume that the time evolution is perfectly unitary and that the full Hilbert space is available.
Marcel Niedermeier +2 more
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