Entanglement sudden birth of two trapped ions interacting with a time-dependent laser field

Abdel‐Aty, Mahmoud; Yu, Ting

doi:10.1088/0953-4075/41/23/235503

Cited by 24 publications

(12 citation statements)

References 68 publications

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“…These results are coincide with that obtained in [26,27], where the entanglement of two effective two-level trapped ions interacting with a laser field is investigated. Also, the entanglement decay and sudden death of entanglement is observed for Werner state in common types of environmental noise [28].…”

Section: Entanglement Dynamicssupporting

confidence: 91%

Information Loss in Local Dissipation Environments

Metwally¹

2010

Int J Theor Phys

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The sensitivity of entanglement to the thermal and squeezed reservoirs' parameters is investigated regarding entanglement decay and what is called sudden-death of entanglement, for a system of two qubit pairs. The dynamics of information is investigated by means of the information disturbance and exchange information. We show that for squeezed reservoir, we can keep both of the entanglement and information survival for a long time.However the sudden death of information is depicted clearly when the entangled qubit system interacts with thermal reservoir. By controlling the environmental parameters, one can reduces the lose of the encrypted information.

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Section: Entanglement Dynamicssupporting

confidence: 91%

Information Loss in Local Dissipation Environments

Metwally¹

2010

Int J Theor Phys

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“…It is well known that entanglement represents the corner stone of most applications of quantum information [1,2,3]. There are several studies devoted to investigate the possibility of generating entanglement between different types of particles [4,5,6]. Quantifying the degree of entanglement which may be generated between these particles assimilates another area for many researchers, where several measurements of entanglement have been found.…”

Section: Introductionmentioning

confidence: 99%

Some properties of multi-qubit systems under effect of the Lorentz transformation

Metwally

2013

Preprint

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Effect of Lorentz transformation on some properties of multi-qubit systems is investigated. It is shown that, properties like, the fidelity and entanglement decay as the Wigner's angles increase, but can be improved, if all the transformed particles are transformed with the same Wigner's angles. The upper bounds of the average capacity of the GHZ state increases while it decreases and more robust with the W-state as the Wigner's angle of the observer decreases. Under Lorentz transformation, the tripartite states transform into another equivalent states and hence no change on the efficiency of these states to perform quantum information tasks.

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“…People not only gave a number of programs to avoid entanglement sudden death, but also raised new plans to achieve entanglement in some cases. But in quantum open system there are still a lot of unsolved problems about the disentanglement [13,14].…”

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confidence: 99%

Controlling on Entangled Decoherence by the Interaction Model Between Qubit and Environment

Lai

2011

Int J Theor Phys

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The entangling evolution of the coupled qubits interacting with non-Markov environment is investigated in terms of concurrence. The results show that the entanglement of quantum systems depends on not only the initial state of system but also the coupling ways between qubit and environment. It shows that: (1) when the system is initially in (|00 ± |11 )/ √ 2 state or in the mixed state which is produced by the state, if we can control the coupling between the qubits and the environment in a asymmetrical state, we can make the quantum system always in the entangled state.(2) For an initial state (|01 ± |10 )/ √ 2 or in its mixed state, in contrast, there will not be entangled death under the symmetric coupling. We also find that, in (|01 ± |10 )/ √ 2 or in its mixed state, the stronger the interaction between qubits is, the better to struggle against entanglement sudden death is.

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Entanglement sudden birth of two trapped ions interacting with a time-dependent laser field

Cited by 24 publications

References 68 publications

Information Loss in Local Dissipation Environments

Information Loss in Local Dissipation Environments

Some properties of multi-qubit systems under effect of the Lorentz transformation

Controlling on Entangled Decoherence by the Interaction Model Between Qubit and Environment

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