Results 31 to 40 of about 25,720 (285)

Sudden Death of Entanglement Induced by Polarization Mode Dispersion [PDF]

open access: yesPhysical Review Letters, 2011
We study the decoherence of polarization-entangled photon pairs subject to the effects of polarization mode dispersion, the chief polarization decoherence mechanism in optical fibers. We show that fiber propagation reveals an intriguing interplay between the concepts of entanglement sudden death, decoherence-free sub-spaces and non-locality.
ANTONELLI, CRISTIAN   +2 more
openaire   +4 more sources

Effect of random telegraph noise on entanglement and nonlocality of a qubit-qutrit system [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics, 2017
We study the evolution of entanglement and nonlocality of a non-interacting qubit-qutrit system under the effect of random telegraph noise (RTN) in independent and common environments in Markovian and non-Markovian regimes.
Hakimeh Jaghouri, Samira Nazifkar
doaj   +1 more source

Entanglement between two superconducting garge qubits

open access: yesВестник Самарского университета: Естественнонаучная серия, 2023
In this paper, we investigated the dynamics of entanglement of two identical charge qubits with Josephson junctions in the case when one of the qubits is exposed to a microwave field in a coherent or thermal state. We have found the exact solution of the
Eugene K. Bashkirov
doaj   +1 more source

Dynamics of the entanglement between two oscillators in the same environment [PDF]

open access: yes, 2008
We provide a complete characterization of the evolution of entanglement between two oscillators coupled to a common environment. For initial Gaussian states we identify three phases with different qualitative long time behavior: There is a phase where ...
Paz, Juan Pablo, Roncaglia, Augusto J.
core   +2 more sources

Influence of the dissipation on the N-level atom interacting with a two two-level atoms in presence of qubit–qubit interaction

open access: yesScientific Reports, 2021
The interacting of two qubits and an N-level atom based on su(2) Lie algebra in the presence of both qubit–qubit interaction and dissipation term is considered.
S. Abdel-Khalek   +3 more
doaj   +1 more source

Time-invariant entanglement and sudden death of nonlocality [PDF]

open access: yesPhysical Review A, 2016
We investigate both theoretically and experimentally the dynamics of entanglement and non-locality for two qubits immersed in a global pure dephasing environment. We demonstrate the existence of a class of states for which entanglement is forever frozen during the dynamics, even if the state of the system does evolve.
Liu, Bi-Heng   +10 more
openaire   +5 more sources

Influence of Stark Shift on Entanglement of Two Qubits in the Two-Photon Tavis-Cummings Model

open access: yesEPJ Web of Conferences, 2015
Considering two-atom degenerate two-photon Tavis-Cummings model, we investigate the entanglement between two atoms prepared initially in the coherent disentangled states and cavity field prepared in few-photon Fock state, and study the effect of the ...
Mastyugin M.S., Bashkirov E.K.
doaj   +1 more source

Open Quantum Systems in Noninertial Frames [PDF]

open access: yes, 2010
We study the effects of decoherence on the entanglement generated by Unruh effect in noninertial frames by using bit flip, phase damping and depolarizing channels. It is shown that decoherence strongly influences the initial state entanglement.
Khan, M. K., Khan, Salman
core   +1 more source

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

open access: yes, 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 ...
A Messina   +5 more
core   +1 more source

Enhancement of Sudden Death of Entanglement for Driven Qubits [PDF]

open access: yesJournal of Low Temperature Physics, 2008
We study the recently discovered phenomena of sudden death of entanglement for a system of two qubits, each of them independently longitudinally damped by a reservoir and subjected to a continuous driving. We show that driving produces, in the interaction picture, an effective bath that has elements amounting to various extra sources of noise ...
Li, Jian, Chalapat, K., Paraoanu, G. S.
openaire   +2 more sources

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