Dynamics super quantum discord and quantum discord teleportation in the Jaynes–Cummings model

Мирмасоуди, Фороузан; Ahadpour, Sodeif

doi:10.1080/09500340.2017.1397216

Cited by 14 publications

(4 citation statements)

References 38 publications

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“…The entropic uncertainty relations have a wide variety of applications in quantum information theory. These applications include the entanglement witnessing [76][77][78][79], quantum cryptography [80,81], quantum teleportation [82,83], quantum key distribution [84,85] and so on.…”

Section: Introductionmentioning

confidence: 99%

Analyzing entropic uncertainty bound in two qubits coupled to a spin environment

et al. 2021

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By assuming a general pure state and a mixed Werner state as two initial states, we investigate the time evolution of entropic uncertainty bound in the presence of quantum memory for a two-qubit system interacting with an XY spin chain regarded as an environment constrained to carry the energy current. We obtain an explicit relationship between the entropic uncertainty bound and decoherence factor, and analytically study the dynamical process of entropic uncertainty bound for both weak and strong-coupling cases in two initial states. Our results reveal that the evolution of entropic uncertainty bound depends not only on the energy current, the system-environment couplings and the anisotropy parameter but also on the size of the environmental XY spin chain. Interestingly, we find that the entropic uncertainty bound can be suppressed by reducing the energy current on the environmental spin chain in a weak-coupling region, however, it has no sensitivity to the energy current in a strong-coupling region.

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Section: Introductionmentioning

confidence: 99%

Analyzing entropic uncertainty bound in two qubits coupled to a spin environment

et al. 2021

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“…With the help of priori quantum entanglement shared by the sender and receiver, teleporting an unknown quantum state from one partner to another without transferring the physical carrier of the state is feasible by performing local quantum operations and classical communication. In the past few decades, quantum teleportation has attracted considerable attentions and developed various approaches not only in theories but also in experiments [2][3][4][5][6][7][8][9][10]. Particularly, it has recently been realized over 1000-kilometer free-space channel quantum teleportation in the experiments [11].…”

Section: Introductionmentioning

confidence: 99%

Teleportation of quantum Fisher information under decoherence channels with memory

2019

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We have investigated how memory effects on the teleportation of quantum Fisher information(QFI) for a single qubit system using a class of X-states as resources influenced by decoherence channels with memory, including amplitude damping, phase-damping and depolarizing channels. Resort to the definition of QFI, we first derive the explicit analytical results of teleportation of QFI with respect to weight parameter θ and phase parameter φ under the decoherence channels. Component percentages, the teleportation of QFI for a two-qubit entanglement system has also been addressed. The remarkable similarities and differences among these two situations are also analyzed in detail and some significant results are presented.

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“…Moreover, this process can play a key role for quantum computing [6] and quantum networks [7]. Various quantum systems have been evaluated as possible candidates for quantum teleportation such as photons [8,9,23], single atoms [10], cavity-quantum-electrodynamics systems [11,12], Jaynes-Cummings models [13] and chiral graphenes [14].…”

Section: Introductionmentioning

confidence: 99%

The pairwise quantum correlations for teleported state via a symmetric multi-qubit system

Ahadpour

Мирмасоуди

2019

Rev. Mex. Fís.

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We study the pairwise quantum correlations for teleported state via a symmetric multi-qubitsystem. In the other words, the proposed model is considered as a quantum channel. Using thequantum discord, super quantum discord and concurrence to quantify quantum correlations forteleported state, some analytical and numerical results are presented. Moreover, we compare thedynamical evolutions of quantum correlations and fidelity versus measurement strength and thenumber of qubit channel for teleported state via symmetric multi-qubit model. Our main goalnow is to study how we can increase the quantum correlations and the fidelity of the teleportedstate in the presence of decoherence. The results show that, measurement strength and thenumber of qubit can control the quantum information obtained through the quantum channel.Therefore, measurement strength can be a good option for measuring exchanged information inthe teleportation process. In addition to, quantum correlations can provide an effective role inquantum teleportation

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Dynamics super quantum discord and quantum discord teleportation in the Jaynes–Cummings model

Cited by 14 publications

References 38 publications

Analyzing entropic uncertainty bound in two qubits coupled to a spin environment

Analyzing entropic uncertainty bound in two qubits coupled to a spin environment

Teleportation of quantum Fisher information under decoherence channels with memory

The pairwise quantum correlations for teleported state via a symmetric multi-qubit system

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