Teleportation of quantum Fisher information under decoherence channels with memory

Guo, You-neng; Zeng, Ke; Chen, Ping-Xing

doi:10.1088/1612-202x/ab2f33

Cited by 13 publications

(10 citation statements)

References 40 publications

(69 reference statements)

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“…By replacing the Kraus operators Eqs. ( 37) and (38) in the channel Eq. ( 20), we get the quantum channel of the BQT:…”

Section: Amplitude Damping Channelmentioning

confidence: 99%

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Memory effect on the bidirectional teleportation

Seida,

Seddik,

Hassouni

et al. 2022

Preprint

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In this contribution, we have investigated the bidirectional quantum teleportation (BQT ) of single qubit states using a Bell state influenced by decoherence channels with memory, dephasing and amplitude damping channels. The expressions of the negativity, as a measure of the entanglement remaining in the BQT quantum channel, the teleportation fidelities and the quantum Fisher information are also evaluated. We find that both these last quantities depend on the survival amount of entanglement in the BQT quantum channel, on the decoherence factor and on the correlation degree of the decoherence channel. We show that in the Markovian regime, the Negativity, the teleportation average fidelities and the quantum Fisher information are slightly enhanced by considering the classical channel correlations. Besides, in the non-Markovian regime, these three quantities could be improved for a long period of time.

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“…By replacing the Kraus operators Eqs. ( 37) and (38) in the channel Eq. ( 20), we get the quantum channel of the BQT:…”

Section: Amplitude Damping Channelmentioning

confidence: 99%

“…The interplay between classical correlated actions of quantum channels and non-Markovianity is discussed in [40]. However, the combined classical and temporal correlation effect on quantum coherence is investigated in [41] and on unidirectional teleportation is discussed in [38,39].…”

Section: Introductionmentioning

confidence: 99%

Memory effect on the bidirectional teleportation

Seida,

Seddik,

Hassouni

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…This interaction will lead to the loss of coherence and the decay of entanglement, which results in the distortion of teleportation [17][18][19][20]. The same is true for the teleportation of QFI [8,[21][22][23][24]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

“…Our study differs from Refs. [22][23][24], in which the performance of the QFI under the uncorrelated decoherence is discussed. The focus of our paper is to examine how correlated effects affect the teleportation of QFI.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the teleportation of quantum Fisher information under correlated amplitude damping decoherence

Yao²,

Zeng³

2022

Front. Phys.

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From the perspective of quantum information transmission, one may be interested in the teleportation of quantum Fisher information (QFI) which provides the optimal precision of parameter estimation. In this paper, we investigate the teleportation of QFI under the correlated amplitude damping (CAD) decoherence. It is found that the correlated effects play a positive role in improving the teleported QFI, but the impact of decoherence is still serious. Therefore, we propose two schemes, which are based on weak measurement (WM) and environment-assisted measurement (EAM), to enhance the teleportation of QFI under the CAD decoherence. The results show that both schemes can significantly improve the teleported QFI with a certain success probability. The findings of our study suggest that the correlated effects can significantly increase the success probabilities of these two schemes. A detailed comparison confirms that the EAM scheme is more efficient than the WM scheme in improving the teleportation of QFI.

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“…Lately, it turned into a basic entrance of the quantum information theory because of its promising prospect in probing the quantum computers and other quantum information devices. In quantum information theory, the entanglement could be considered as a clue role for implementing some quantum information tasks such as quantum cryptography [6], quantum computations, geometric quantum computation [7][8][9], and dense coding [1,10]. In the past few decades, the role of quantum correlations in dense coding and teleportation has attracted considerable attention and expanded multiple approaches not only in theories but also in experiments [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Thermal quantum correlations of spin chain with multiple interactions

Ahadpour

Мирмасоуди

2020

Rev. Mex. Fís.

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In order to explore the impact of distance between spins on quantum correlation, we compute trace ditance discord (TDD) and spin squeezing in an anisotropic Heisenberg XYZ model with Dzyaloshinskii-Moriya interaction in the presence of the external magnetic field. It is valuable to investigate that how we can protect quantum correlations in system when the distance between the spins is promoted. We find that rich Dzyaloshinskii-Moriya interaction and low temperature can be effective for quantum correlations with increasing distance between spins. As, at sufficeintly low temperature In addition, the generated correlated channels are inspected to interchange the information between the system qubits applying the standard dense coding protocol; then, the dense coding capacity of the transmitted information is quantified. It is found that the strength Dzyaloshinskii-Moriya interaction and magnetic field have a great impact on the dynamics of the quantum correlations and, consequently, the quality of the generated channels to exchange the information. Therefore, the effect of Dzyaloshinskii-Moriya interaction for various strengths of temperature needs to be considered to have valid dense coding when distance of spin increases.

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Teleportation of quantum Fisher information under decoherence channels with memory

Cited by 13 publications

References 40 publications

Memory effect on the bidirectional teleportation

Memory effect on the bidirectional teleportation

Enhancing the teleportation of quantum Fisher information under correlated amplitude damping decoherence

Thermal quantum correlations of spin chain with multiple interactions

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