Quantum steering on IBM quantum processors

Seifert, Lennart Maximilian; Beyer, Konstantin; Luoma, Kimmo; Strunz, Walter T.

doi:10.1103/physreva.105.042413

Cited by 3 publications

(2 citation statements)

References 51 publications

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“…[16] Besides, it is found recently that quantum steering can also be used to demonstrate network steering [17] and can be observed on IBM quantum computers. [18] On the other hand, the realization of establishing longdistance nonclassical correlations (between two nodes of a quantum network), especially in dissipative environments, is crucial for quantum information processing. [19] It has been reported that photons can be used as a medium to set up entanglement between two qubits.…”

Section: Introductionmentioning

confidence: 99%

Quantum steerability of two qubits mediated by one-dimensional plasmonic waveguides

Zhang

Ding²,

Sun³

et al. 2022

Chinese Phys. B

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We study the dynamics of the quantum steering between two separated qubits trapped in a one-dimensional plasmonic waveguide. By numerical methods, we calculate the quantum steerability and other quantum correlations, i.e., entanglement, discord, and coherence, for both cases with and without laser driving fields. It is found that steerability may exhibit a sudden disappearance and sudden reappearance phenomenon. Specifically, there exist time windows with no steerability but finite entanglement. The effects of plasmon wave number and the distance between the two qubits on steerability are also examined. Furthermore, we show that quantum steerability is tunable by adjusting the laser driving fields.

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Section: Introductionmentioning

confidence: 99%

Quantum steerability of two qubits mediated by one-dimensional plasmonic waveguides

Zhang

Ding²,

Sun³

et al. 2022

Chinese Phys. B

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“…Collision models are a versatile tool for investigating open quantum system dynamics (for examle, see the recent review [1]). They have been used to explore quantum memory effects [2][3][4][5][6][7], quantum thermodynamics [8][9][10][11][12][13][14][15][16], and system-environment correlations [10,17,18]. In this article, we focus on a so-called composite collision model.…”

Section: Introductionmentioning

confidence: 99%

Measured Composite Collision Models: Quantum Trajectory Purities and Channel Divisibility

Beyer

Luoma

Lenz

et al. 2022

Entropy

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We investigate a composite quantum collision model with measurements on the memory part, which effectively probe the system. The framework allows us to adjust the measurement strength, thereby tuning the dynamical map of the system. For a two-qubit setup with a symmetric and informationally complete measurement on the memory, we study the divisibility of the resulting dynamics in dependence of the measurement strength. The measurements give rise to quantum trajectories of the system and we show that the average asymptotic purity depends on the specific form of the measurement. With the help of numerical simulations, we demonstrate that the different performance of the measurements is generic and holds for almost all interaction gates between the system and the memory in the composite collision model. The discrete model is then extended to a time-continuous limit.

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Adaptively partitioned analog quantum simulation on near-term quantum computers: The nonclassical free-induction decay of NV centers in diamond

Kuo,

Chen

2023

Phys. Rev. Research

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Quantum steering on IBM quantum processors

Cited by 3 publications

References 51 publications

Quantum steerability of two qubits mediated by one-dimensional plasmonic waveguides

Quantum steerability of two qubits mediated by one-dimensional plasmonic waveguides

Measured Composite Collision Models: Quantum Trajectory Purities and Channel Divisibility

Adaptively partitioned analog quantum simulation on near-term quantum computers: The nonclassical free-induction decay of NV centers in diamond

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