Results 1 to 10 of about 943 (251)
Sudden death and revival of Gaussian Einstein–Podolsky–Rosen steering in noisy channels
npj Quantum Information, 2021 Einstein–Podolsky–Rosen (EPR) steering is a useful resource for secure quantum information tasks. It is crucial to investigate the effect of inevitable loss and noise in quantum channels on EPR steering.
Xiaowei Deng +4 more
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Dynamics of qubit entanglement in three-qubit Jaynes–Cummings model for biseparable intial states
Физика волновых процессов и радиотехнические системыBackground. To operate a quantum computer, a set of universal gates must be implemented, such as a two-cubit gate of the controlled negation type plus one-cubit spins. As a universal alternative, three-cubic-bit gates may be used.
Alexander R. Bagrov, Eugene K. Bashkirov
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Coherent State Control to Recover Quantum Entanglement and Coherence
Entropy, 2019 How to analytically deal with the entanglement and coherence dynamics of separated Jaynes−Cummings nodes with continuous-variable fields is still an open question. We here generalize this model to a more common situation including either a small or
Li-Tuo Shen +2 more
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Hawking effect can generate physically inaccessible genuine tripartite nonlocality
European Physical Journal C: Particles and Fields, 2023 We explore the acceleration effect on the genuine tripartite nonlocality (GTN) for one or two accelerated detector(s) coupled to the vacuum field with initial mixed tripartite states.
Tinggui Zhang, Xin Wang, Shao-Ming Fei
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Entanglement harvesting and quantum discord of alpha vacua in de Sitter space
Journal of High Energy PhysicsThe CPT invariant vacuum states of a scalar field in de Sitter space, called α-vacua, are not unique. We explore the α-vacua from the quantum information perspective by a pair of static Unruh-DeWitt (UDW) detectors coupled to a scalar field with either ...
Feng-Li Lin, Sayid Mondal
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Физика волновых процессов и радиотехнические системы, 2014 The influence of Stark shift on atom-atom entanglement of two identical atoms interacting with mode of electromagnetic field in lossless cavity via degenerate two-photon transitions has been investigated.
E.K. Bashkirov, M.S. Mastyugin
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Acceleration-assisted entanglement harvesting and rangefinding
New Journal of Physics, 2015 We study entanglement harvested from a quantum field through local interaction with Unruh–DeWitt detectors undergoing linear acceleration. The interactions allow entanglement to be swapped locally from the field to the detectors.
Grant Salton +2 more
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Physics Letters B, 2015 We explore the performance of various correlation measures for open Dirac system with Hawking effect in Schwarzschild space–time. Our results indicate that the impact of Hawking effect on physical accessible entanglement is weaker than that of ...
Juan He, Shuai Xu, Yang Yu, Liu Ye
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Alexandria Engineering Journal, 2020 In this work, we introduce a model of a two-atom interacting with a multi-level atom governed by su(2) Lie algebra in the presence of external classical field.
Eman M.A. Hilal +4 more
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European Physical Journal C: Particles and FieldsIt is generally believed that quantum entanglement in the maximally entangled states is greater than quantum entanglement in the non-maximally entangled states under a relativistic setting.
Shu-Min Wu, Si-Han Li
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