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 atom-atom entanglement in two-atom model with degenerate two-photon raman transitions
Вестник Самарского университета: Естественнонаучная серияThe exact dynamics of a model consisting of two two-level atoms interacting with the electromagnetic field mode of an ideal resonator through degenerate Raman transitions are found for coherent and thermal field states.
A. Othman, E. K. Bashkirov
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Skew information correlations beyond entanglement in dissipative two Su(2)-systems
Results in Physics, 2019 We investigate the dynamics of quantum correlations [including skew information correlations beyond entanglement] of two isolated Su(2)-systems that are initially in a maximum Bell state or in a separable state.
A.-B.A. Mohamed, H. Eleuch
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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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Photon Induced Entanglement in Atom-Cavity Systems
, 2010 We study the evolution of quantum entanglement in double cavity systems. The entanglement of cavity atoms induced by entangled pair of photons is investigated. Both entanglement sudden death and entanglement sudden birth phenomena are shown to be existed
Fei, Shao-Ming +2 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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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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Quantum error correction may delay, but also cause, entanglement sudden death
, 2008 Dissipation may cause two initially entangled qubits to evolve into a separable state in a finite time. This behavior is called entanglement sudden death (ESD). We study to what extent quantum error correction can combat ESD.
Gunnar Björk +4 more
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Entanglement without Dissipation: A Touchstone for an exact Comparison of Entanglement Measures [PDF]
, 2010 Entanglement, which is an essential characteristic of quantum mechanics, is the key element in potential practical quantum information and quantum communication systems.
Amico +34 more
core +3 more sources