Results 11 to 20 of about 25,720 (285)
Science, 2009 A new development in the dynamical behavior of elementary quantum systems is the surprising discovery that correlation between two quantum units of information called qubits can be degraded by environmental noise in a way not seen previously in studies of dissipation.
Yu, Ting, Eberly, J. H.
exaly +6 more sources
Sudden Birth versus Sudden Death of Entanglement in Multipartite Systems [PDF]
Physical Review Letters, 2008 We study the entanglement dynamics of two cavities interacting with independent reservoirs. Expectedly, we observe that, as the cavity entanglement is depleted, it is transferred to the reservoir degrees of freedom. We find that when the cavity entanglement suddenly disappear, the reservoir entanglement suddenly and necessarily appears.
Lopez, C. E. +4 more
openaire +12 more sources
Disentanglement Dynamics in Nonequilibrium Environments [PDF]
Entropy, 2022 We theoretically study the non-Markovian disentanglement dynamics of a two-qubit system coupled to nonequilibrium environments with nonstationary and non-Markovian random telegraph noise statistical properties. The reduced density matrix of the two-qubit
Mingli Chen +3 more
doaj +2 more sources
Experimental Observation of Environment-induced Sudden Death of Entanglement [PDF]
SPIE Proceedings, 2007 We demonstrate the difference between local, single-particle dynamics and global dynamics of entangled quantum systems coupled to independent environments. Using an all-optical experimental setup, we show that, while the environment-induced decay of each
Almeida, M. P. +6 more
core +4 more sources
Do all states undergo sudden death of entanglement at finite temperature? [PDF]
Physical Review A, 2007 In this paper we consider the decay of quantum entanglement, quantified by the concurrence, of a pair of two-level systems each of which is interacting with a reservoir at finite temperature T.
Asma Al-Qasimi +3 more
core +2 more sources
Non-Markovian noise mitigation in quantum teleportation: enhancing fidelity and entanglement [PDF]
Scientific ReportsMaintaining quantum coherence and entanglement in the presence of environmental noise, particularly within non-Markovian contexts, represents a significant challenge for the progression of quantum information science and technology.
Haiyang Zhang +8 more
doaj +2 more sources
Delayed sudden death of entanglement at exceptional points [PDF]
Physical Review A, 2019 Almost a decade ago, physicists encountered a strange quantum phenomenon that predicts an unusual death of entanglement under the influence of local noisy environment,known as entanglement sudden death (ESD). This could be an immediate stumbling block in realizing all the entanglement based quantum information and computation protocols.
Chakraborty, Subhadeep +1 more
openaire +4 more sources
Entanglement Sudden Death and Sudden Birth in Semiconductor Microcavities
International Journal of Theoretical Physics, 2011 We explore the dynamics of the entanglement in a semiconductor cavity QED containing a quantum well.
Abdel-Khalek, S. +2 more
core +3 more sources
Universality of sudden death of entanglement [PDF]
Quantum Information and Computation, 2011 We present a constructive argument to demonstrate the universality of the sudden death of entanglement in the case of two non-interacting qubits, each of which generically coupled to independent Markovian environments at zero temperature. Conditions for the occurrence of the abrupt disappearance of entanglement are determined and, most importantly ...
Fanchini, F. F. +2 more
openaire +2 more sources
Physical Review Research, 2023 Entanglement is known to decay even in isolated systems, an effect attributed to spontaneous emission. This fragility of entanglement can be exacerbated by entanglement sudden death (ESD), where entanglement drops to zero abruptly within a finite time ...
Songbo Xie +2 more
doaj +1 more source