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Control of entanglement sudden death by Kerr medium
Chinese Physics B, 2008The entanglement dynamics of system, where atoms A and B interact with single mode cavity fields a and b respectively, is studied. The interaction between atom A and cavity a may be described by using the typical Jaynes–Cummings model, while that between the atom B and cavity b filled with a Kerr medium is of a two-photon process. For a certain initial
Zheng Qiang +2 more
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Coherent and ultrafast manipulation of entanglement sudden death and recurrence
Optics Letters, 2010We investigate the entanglement dynamics of the bipartite system, consisting of two interacting two-level atoms in QED, which are driven additionally by coherent double ultrashort laser pulses characterized by various phase differences. Results show that the relative phase difference can exert significant influence on the entanglement evolution, such ...
Xiang-yang, Yu, Jian-hong, Li
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The sudden death of entanglement in constructed Yang–Baxter systems
Quantum Information Processing, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hu, Taotao, Sun, Chunfang, Xue, Kang
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Determining Separability with Entanglement of Formation and Entanglement Sudden Death
Chinese Physics Letters, 2015An algorithm is developed to calculate the entanglement of formation for bipartite quantum states to determine numerically the sufficient condition of separability. The algorithm is applied to two 3×3 positive partial transpose states mixed with white noise.
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A NEW FEATURE ON THE SUDDEN DEATH OF ENTANGLEMENT
Modern Physics Letters B, 2008Based on the exactly analytic solution obtained of the intensity-dependent Jaynes–Cummings model for a certain class of initial entangled mixed states, we explore the time evolution of the entanglement between two atoms, initially non-locally correlated and separately interacting with two distinct cavities.
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Experimental Demonstration of Largeness in Bipartite Entanglement Sudden Death
Chinese Physics Letters, 2011Quantum coherence is the most distinct feature of quantum mechanics. However, inevitable decoherence processes will finally destroy it and make the "Schrodinger's cat" invisible in our classical world. In this "quantum-to-classical transition", the so-called "largeness" plays a critical role.
Liang Peng +5 more
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Sudden death of entanglement of a quantum model
Chinese Physics, 2007In this paper the so-called sudden death effect of entanglement is investigated in a quantum model. The results show that one can expect the resurrection of the original entanglement to occur in a periodic way following each sudden death event. The length of the time interval for the zero entanglement depends not only on the degree of entanglement of ...
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Influence of Interaction Between Qubits on Entanglement Sudden Death and Birth
International Journal of Theoretical Physics, 2010zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ji, Y. H., Wang, Z. S., Hu, J. J.
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A STUDY ON THE SUDDEN DEATH AND SUDDEN BIRTH OF ENTANGLEMENT IN AN OPEN SYSTEM
International Journal of Quantum Information, 2009In this paper, we consider the entanglement dynamics of two cavities interacting with independent reservoirs. When the cavity entanglement suddenly disappeared, the reservoir entanglement suddenly and necessarily appears. We study the effect of purity of initial entangled state of two cavities on the entanglement evolution, and acquire that the purity
Zhang, Ying-Jie, Xia, Yun-Jie
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Delayed sudden birth and sudden death of entanglement in Josephson-charge qubits
Laser Physics, 2009Distinctive features of the entanglement dynamics of a circuit containing two-coupled superconducting charge qubits are explored. The striking effects of junction coupling on the entanglement are presented in terms of the concurrence. We also point out the importance effects of initial state selection for obtaining different features of entanglement ...
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