Results 1 to 10 of about 555,785 (205)

Entanglement sudden death and sudden birth in two uncoupled spins [PDF]

Physica Scripta Special Topics T135, 014032 (2009), 2009
We investigate the entanglement evolution of two qubits interacting with a common environment trough an Heisenberg XX mechanism. We reveal the possibility of realizing the phenomenon of entanglement sudden death as well as the entanglement sudden birth acting on the environment.
A Messina, A Napoli, E Ferraro, M Guccione, Napoli A, Yönaç M   +5 more
arxiv   +3 more sources

Sudden death and sudden birth of entanglement in common structured reservoirs [PDF]

, 2008
We study the exact entanglement dynamics of two qubits in a common structured reservoir. We demonstrate that, for certain classes of entangled states, entanglement sudden death occurs, while for certain initially factorized states, entanglement sudden birth takes place.
B. M. Garraway, H.-P. Breuer, J. Piilo, K.-A. Suominen, L. Mazzola, M. A. Nielsen, S. Haroche, S. Maniscalco, S. Stenholm   +8 more
arxiv   +4 more sources

The Geometry of Entanglement Sudden Death [PDF]

New Journal of Physics 9 (2007) 237, 2007
In open quantum systems, entanglement can vanish faster than coherence. This phenomenon is usually called sudden death of entanglement. In this paper sudden death of entanglement is discussed from a geometrical point of view, in the context of two qubits.
Diósi L, Feynman R P Leighton R B Sands M, Ficek Z, Giulini D, Harris J, Marcelo O Terra Cunha, Terra Cunha M O, Yu T Eberly J H, Yu T Eberly J H   +8 more
arxiv   +4 more sources

Entanglement Sudden Death in Band Gaps [PDF]

, 2009
Using the pseudomode method, we evaluate exactly time-dependent entanglement for two independent qubits, each coupled to a non-Markovian structured environment. Our results suggest a possible way to control entanglement sudden death by modifying the qubit-pseudomode detuning and the spectrum of the reservoirs.
A. Wallraff, B. Bellomo, B. Bellomo, B.M. Garraway, B.M. Garraway, C.E. López, D.L. Moehring, E. Hagley, G. C. Guo, G. Gordon, H. Häffner, H.-P. Breuer, J. Laurat, J. Majer, J.H. Eberly, L. Diósi, L. Viola, M. Konópka, M. Lewenstein, M.P. Almeida, R.F. Nabiev, S. Maniscalco, S. Osnaghi, T. Yu, T. Yu, W.K. Wootters, Y. J. Xia, Y. J. Zhang, Y.J. Zhang, Z. X. Man   +29 more
arxiv   +3 more sources

Entanglement breaking channels and entanglement sudden death [PDF]

Phys. Rev. A 94, 012345 (2016), 2016
The occurrence of entanglement sudden death in the evolution of a bipartite system depends on both the initial state and the channel responsible for the evolution. An extreme case is that of entanglement braking channels, which are channels that acting on only one of the subsystems drives them to full disentanglement regardless of the initial state. In
Farías, Osvaldo Jiménez, Knoll, Laura T., Larotonda, Miguel A., Schmiegelow, Christian T., Walborn, Stephen P.   +4 more
arxiv   +5 more sources

Sudden death of effective entanglement [PDF]

Phys. Rev. A 81, 042308 (2010), 2009
Sudden death of entanglement is a well-known effect resulting from the finite volume of separable states. We study the case when the observer has a limited measurement capability and analyse the effective entanglement, i.e. entanglement minimized over the output data.
I. L. Chuang, K. Roszak, M.-D. Choi, P. Horodecki, R. Horodecki   +4 more
arxiv   +3 more sources

Sudden Death of Entanglement: Classical Noise Effects [PDF]

Opt. Commun. 264, 393 (2006), 2006
When a composite quantum state interacts with its surroundings, both quantum coherence of individual particles and quantum entanglement will decay. We have shown that under vacuum noise, i.e., during spontaneous emission, two-qubit entanglement may terminate abruptly in a finite time [T. Yu and J. H.
Beige, Carvalho, Cirac, Diosi, Dodd, Dodd, Eberly, Gisin, J.H. Eberly, Kielpinski, Kielpinski, Lagmago Kamta, Lidar, Nielsen, Pratt, Shore, T. Yu, Wang, Werner, Wodkiewicz, Wodkiewicz, Wodkiewicz, Wodkiewicz, Wootters, Yu, Yu, Yu   +26 more
arxiv   +3 more sources

Sudden cardiac death [PDF]

Cardiovascular Pathology, 2000
The rate of cardiac deaths that are sudden is approximately 50%, and decreases with age. The causes of sudden cardiac death are diverse, and are a function of age. In children and adolescents, coronary anomalies, hypertrophic cardiomyopathy and myocarditis are frequent substrates for lethal arrhythmias; in adults, coronary atherosclerosis and acquired ...
Bayés de Luna, Antoni, Bayés Genís, Antoni, Guindo Soldevila, Josep, Martínez-Rubio, A.   +3 more
core   +9 more sources

Structural imaging biomarkers of sudden unexpected death in epilepsy. [PDF]

, 2015
Sudden unexpected death in epilepsy is a major cause of premature death in people with epilepsy. We aimed to assess whether structural changes potentially attributable to sudden death pathogenesis were present on magnetic resonance imaging in people who ...
Balestrini, Simona, Diehl, Beate, Duncan, John S, Harper, Ronald M, Koepp, Matthias, Lhatoo, Samden, Micallef, Caroline, Sander, Josemir W, Scott, Catherine, Sisodiya, Sanjay M, Thom, Maria, Vos, Sjoerd B, Wandschneider, Britta   +12 more
core   +3 more sources

Is composite noise necessary for sudden death of entanglement? [PDF]

, 2013
The finite time disentanglement or entanglement sudden death, when only one part of the composite system is subjected to a single noise, is examined. While it is shown that entanglement sudden death can occur when a part of the entangled mixed state is ...
Sudha, Yashodamma, K. O.
core   +2 more sources