Quantum temporal steering in a noise channel with topological characterization

Chen, M.; Gong, Lei; Zhao, Sheng-Yang

doi:10.1140/epjd/s10053-021-00090-y

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…[16] While spatial quantum steering has garnered significant attention and sparked extensive discussions, its temporal counterpart, quantum TS, has also generated notable interest. [21][22][23][24][25][26][27] In this scenario, Alice sends a quantum system to a remote recipient, such as Bob, via a designated quantum channel referred to as Λ . Nevertheless, before Bob receives and measures the quantum system, Alice can manipulate her quantum system using specific operations.…”

Section: Introductionmentioning

confidence: 99%

Enhancing quantum temporal steering via frequency modulation

Wu 吴,

Cheng 程

2024

Chinese Phys. B

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Various strategies have been proposed to harness and protect space-like quantum correlations in different models under decoherence. However, little attention has been given to temporal-like correlations, such as quantum temporal steering (TS), in this context. In this work, we investigate TS in a frequency-modulated two-level system coupled to a zero-temperature reservoir in both the weak and strong coupling regimes. We analyze the impact of various frequency-modulated parameters on the behavior of TS and non-Markovian. The results demonstrate that appropriate frequency-modulated parameters can enhance the TS of the two-level system, regardless of whether the system is experiencing Markovian or non-Markovian dynamics. Furthermore, a suitable ratio between modulation strength and frequency (i.e., all zeroes of the 0th Bessel function J 0(δ/Ω)) can significantly enhance TS in the strong coupling regime. These findings indicate that efficient and effective manipulation of quantum TS can be achieved through a frequency-modulated approach.

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Section: Introductionmentioning

confidence: 99%

Enhancing quantum temporal steering via frequency modulation

Wu 吴,

Cheng 程

2024

Chinese Phys. B

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“…Furthermore, this genius character may take an important role in various quantum information tasks, such as quantum key distribution [44] and secure teleportation [45]. Recently, the properties of EPR steering in varying spin-chain systems have been focused [46][47][48][49][50], e.g., thermal quantum steering in Heisenberg XXZ model with uniform magnetic field [46] and non-uniform ones [47] have been considered, and the relationship between EPR steering and quantum criticality in several typical spin chains has been addressed well [48][49][50]. As mentioned above, although there are many works focusing on the symmetric quantum correlations in the spin-chain system by taking account of decoherence effect, the asymmetric EPR steering has so far rarely been considered.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Einstein–Podolsky–Rosen steering in Heisenberg model under decoherence

Wang

Gong

Zhao

2021

Quantum Inf Process

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Symmetric quantum correlations and their properties have been investigated extensively in spin chain model under decoherence. However, the asymmetric ones, e.g., Einstein-Podolsky-Rosen steering, have been attracted smaller amount of attention in this issue. In this work, we study the dynamics of Einstein-Podolsky-Rosen steering, measured by steering robustness R, for a two-qubit Heisenberg XYZ chain with inhomogeneous magnetic field by taking account of decoherence effect. The influences of magnetic field and anisotropic parameter on steering robustness are investigated for different initial states. It is found that the phenomenon of steering sudden death as well as sudden birth appears during the evolution process for particular initial states. Furthermore, the asymmetric property of Einstein-Podolsky-Rosen steering is focused and analyzed in detail. It is shown that the asymmetric steering is directly linked to the initial state as well as the external non-uniform magnetic field. Meanwhile, we find that there always exists asymmetric steering even the magnetic field is homogeneous for both the initial two-qubit pure state |10 and asymmetry mixed ones.

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Nonequilibrium effects on quantum temporal steering

2023

Quantum Inf Process

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Quantum temporal steering in a noise channel with topological characterization

Cited by 4 publications

References 39 publications

Enhancing quantum temporal steering via frequency modulation

Enhancing quantum temporal steering via frequency modulation

Dynamics of Einstein–Podolsky–Rosen steering in Heisenberg model under decoherence

Nonequilibrium effects on quantum temporal steering

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