Collective multipartite Einstein-Podolsky-Rosen steering via cascaded four-wave mixing of rubidium atoms

Liu, Yang; Cai, Yin; Luo, Binshuo; Yan, Jin; Niu, Mengqi; Feng, Li; Zhang, Yanpeng

doi:10.1103/physreva.104.033704

Cited by 12 publications

(6 citation statements)

References 64 publications

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“…This feature thus opens the possibility for the realization of quantum secret sharing 32,33 and quantum key authentication 64 . Numerous collective steering criteria have been derived, but mostly refer to the continuous-variable system 65,66 .…”

Section: Dynamical Behaviors Of Collective Steering Detection Of Coll...mentioning

confidence: 99%

Dynamics of multipartite quantum steering for different types of decoherence channels

Xiao

Han

et al. 2023

Sci Rep

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Multipartite quantum steering, a unique resource for asymmetric quantum network information tasks, is very fragile to the inevitable decoherence, which makes it useless for practical purposes. It is thus of importance to understand how it decays in the presence of noise channels. We study the dynamic behaviors of genuine tripartite steering, reduced bipartite steering, and collective steering of a generalized three-qubit W state when only one qubit interacts independently with the amplitude damping channel (ADC), phase damping channel (PDC) or depolarizing channel (DC). Our results provide the region of decoherence strength and state parameters that each type of steering can survive. The results show that these steering correlations decay the slowest in PDC and some non-maximally entangled states more robust than the maximally entangled ones. Unlike entanglement and Bell nonlocality, the thresholds of decoherence strength that reduced bipartite steering and collective steering can survive depend on the steering direction. In addition, we find that not only one party can be steered by a group system, but also two parties can be steered by a single system. There is a trade-off between the monogamy relation involving one steered party and two steered parties. Our work provides comprehensive information about the effect of decoherence on multipartite quantum steering, which will help to realize quantum information processing tasks in the presence of noise environments.

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Section: Dynamical Behaviors Of Collective Steering Detection Of Coll...mentioning

confidence: 99%

Dynamics of multipartite quantum steering for different types of decoherence channels

Xiao

Han

et al. 2023

Sci Rep

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show abstract

“…This feature thus opens the possibility for the realization of quantum secret sharing 31,32 and quantum key authentication 63 . Numerous collective steering criteria have been derived, but mostly refer to the continuous-variable system 64,65 .…”

Section: Detection Of Collective Steeringmentioning

confidence: 99%

Dynamics of multipartite quantum steering for different types of decoherence channels

Xiao

Han

et al. 2022

Preprint

View full text Add to dashboard Cite

Multipartite quantum steering, a unique resource for asymmetric quantum network information tasks, is very fragile to the inevitable decoherence, which makes it useless for practical purposes. It is thus of importance to understand how it decays in the presence of noise channels. We study the dynamic behaviors of genuine tripartite steering, reduced bipartite steering, and collective steering of a generalized three-qubit W state when only one qubit interacts independently with the amplitude damping channel (ADC), phase damping channel (PDC) or depolarizing channel (DC). Our results provide the region of decoherence strength and state parameters that each type of steering can survive. The results show that these steering correlations decay the slowest in PDC and some non-maximally entangled states more robust than the maximally entangled ones. Unlike entanglement and Bell nonlocality, the sudden death of reduced bipartite steering and collective steering are directional. In addition, we fifind that not only one party can be steered by a group system, but also two parties can be steered by a single system. There is a trade-off between the monogamy relation involving one steered party and two steered parties. Our work provides comprehensive information about the effect of decoherence on multipartite quantum steering, which will help to realize quantum information processing tasks in the presence of noise environments.

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“…Therefore, employing spontaneous parametric down-conversion (SPDC) is of great importance in generating entangled light beams. [27][28][29][30][31][32][33][34] The application in microwave photonics based on the PT symmetry breaking has also been researched. [35] In this paper, non-Hermitian (EP) control of the energy level dressing system through dephase-rate is similar to the microcavity/waveguide coupling system through loss /gain.…”

Section: Introductionmentioning

confidence: 99%

Non‐Hermitian Control of Multimode Duan‐PPT Criteria and Steering in Energy‐Level Cascaded Four‐Wave Mixing Processes

Wei,

Huang,

et al. 2024

Adv Quantum Tech

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The non‐Hermitian singularity control of multimode entanglement in the energy‐level cascaded four‐wave mixing system within a single atomic vapor is of great significance and importance. In this study, a non‐Hermiticity system by means of quasi‐quantization of energy‐band based on non‐Hermiticity systems is constructed. By employing atomic coherence in the non‐Hermiticity system, high‐dimensional quantized photon correlations underdressed field‐induced parity‐time (PT) symmetry and symmetry breaking through the quantization of energy levels are studied. Such a phenomenon happens at microscopic (nanoscale) when the eigenvalues of dressed energy‐level and multimode entanglement are considered for both real and imaginary parts symmetry breaking. Double dressing effect is observed with more coherent channels and larger information capacity than single dressing in the energy‐level cascaded four‐wave mixing system. The study found that the splitting of the real part is larger than an imaginary part in a second‐order system, and the imaginary part splitting is also greater than the real part splitting in a third‐order system. The real part (in phase) is constructive dressing quantization, and the imaginary (out of phase) is destructive dressing quantization. Exceptional points (EP points) can be used to enhance sensitivity detection of entanglement quantum state.

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Collective multipartite Einstein-Podolsky-Rosen steering via cascaded four-wave mixing of rubidium atoms

Cited by 12 publications

References 64 publications

Dynamics of multipartite quantum steering for different types of decoherence channels

Dynamics of multipartite quantum steering for different types of decoherence channels

Dynamics of multipartite quantum steering for different types of decoherence channels

Non‐Hermitian Control of Multimode Duan‐PPT Criteria and Steering in Energy‐Level Cascaded Four‐Wave Mixing Processes

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