Results 1 to 10 of about 25,720 (285)

Sudden Death of Entanglement: Classical Noise Effects [PDF]

Optics Communications, 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 ...
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
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The Geometry of Entanglement Sudden Death [PDF]

New Journal of Physics, 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
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Sudden death of effective entanglement [PDF]

Physical Review A - Atomic, Molecular, and Optical Physics, 2010
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.
I. L. Chuang, K. Roszak, M.-D. Choi, P. Horodecki, R. Horodecki   +4 more
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Decoherence-Induced Sudden Death of Entanglement and Bell Nonlocality [PDF]

Photonics, 2022
Decoherence due to the unwanted interaction between a quantum system and environment leads to the degradation of quantum coherence. In particular, for an entangled state, decoherence makes a loss of entanglement and Bell nonlocality known as entanglement
Dong-Gil Im, Yoon-Ho Kim
doaj   +3 more sources

Exact dynamics of interacting qubits in a thermal environment: results beyond the weak coupling limit

New Journal of Physics, 2013
We demonstrate an exact mapping of a class of models of two interacting qubits in thermal reservoirs to two separate problems of spin–boson-type systems.
Lian-Ao Wu, Claire X Yu, Dvira Segal
doaj   +2 more sources

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

Physical Review A, 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 ...
B. M. Garraway, H.-P. Breuer, J. Piilo, K.-A. Suominen, L. Mazzola, M. A. Nielsen, S. Haroche, S. Maniscalco, S. Stenholm   +8 more
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Two-Qubit Local Fisher Information Correlation beyond Entanglement in a Nonlinear Generalized Cavity with an Intrinsic Decoherence [PDF]

Entropy, 2021
In this paper, we study a Hamiltonian system constituted by two coupled two-level atoms (qubits) interacting with a nonlinear generalized cavity field. The nonclassical two-qubit correlation dynamics are investigated using Bures distance entanglement and
A.-B. A. Mohamed, E. M. Khalil, M. F. Yassen, H. Eleuch   +3 more
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Sudden Death of Entanglement of Two Jaynes-Cummings Atoms [PDF]

Journal of Physics B: Atomic, Molecular and Optical Physics, 2006
We investigate entanglement dynamics of two isolated atoms, each in its own Jaynes-Cummings cavity. We show analytically that initial entanglement has an interesting subsequent time evolution, including the so-called sudden death effect.Comment: 3 pages,
Diosi L, J H Eberly, Jaynes E T, Joos E, Muhammed Yönaç, Ting Yu, Yu T Eberly J H, Yu T Eberly J H, Yönac M Yu T Eberly J H, Zurek W H   +9 more
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Geometry of Entanglement Sudden Death: Explicit Examples [PDF]

AIP Conference Proceedings, 2008
In open quantum systems, entanglement can vanish faster than coherence. This phenomenon is usually called sudden death of entanglement. In [M. O. Terra Cunha, New J. Phys.
Andrei Yu. Khrennikov, Christopher Fuchs, Gregg Jaeger, Guillaume Adenier, Jan-Åke Larsson, Luigi Accardi, Marcelo O. Terra Cunha, Raphael C. Drumond, Stig Stenholm   +8 more
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Entanglement microscopy and tomography in many-body systems [PDF]

Nature Communications
Quantum entanglement uncovers the essential principles of quantum matter, yet determining its structure in realistic many-body systems poses significant challenges.
Ting-Tung Wang, Menghan Song, Liuke Lyu, William Witczak-Krempa, Zi Yang Meng   +4 more
doaj   +2 more sources