Bright six-partite entanglement from coupled intracavity nondegenerate parametric down-conversion

Wang, Junfeng; Ma, Luwei; Chen, Jing‐Lin; Wu, Hongyan; Liu, Yuzhu; Wang, Enhui; Yan, Qing; Yuan, Shu

doi:10.1088/1612-202x/aa63bb

Cited by 4 publications

(4 citation statements)

References 40 publications

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“… 14 . Multipartite quantum entanglement can be generated by coupled intracavity nondegenerate parametric down-conversion 15 , 16 and cascaded nonlinear process 17 , 18 . Quantum steering is different from quantum entanglement.…”

Section: Introductionmentioning

confidence: 99%

The generation of genuine quadripartite Einstein–Podolsky–Rosen steering in an optical superlattice

Shen,

Chen,

Liang

et al. 2023

Sci Rep

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Einstein–Podolsky–Rosen (EPR) steering is a quantum effect based on quantum entanglement and it is the key resource for building quantum networks because of its useful properties. Based on the criterion for genuine multipartite EPR steering, the genuine quadripartite EPR steering is confirmed and it can be generated by a spontaneous parametric down-conversion cascaded process with two sum-frequency generations in an optical superlattice. This occurs either below the oscillation threshold and without oscillation threshold. The influence of the parameters of cascaded nonlinear process on the quadripartite EPR steering among signal, idler, and two sum-frequency beams are also discussed. Choosing appropriate nonlinear parameters can achieve good quadripartite quantum steering. This scheme of the generation of genuine quadripartite EPR steering has potential applications in quantum communication and computing.

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Section: Introductionmentioning

confidence: 99%

The generation of genuine quadripartite Einstein–Podolsky–Rosen steering in an optical superlattice

Shen,

Chen,

Liang

et al. 2023

Sci Rep

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“…Nondegenerate optical parametric oscillators with or without the injected signal can directly produce two-color [9][10][11][12] or three-color CV entangled fields [13][14][15]. Besides, cascaded, concurrent and coupled nonlinear down conversion processes can generate multipartite CV entanglement beams with different frequencies [16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Bright four-color quadripartite entanglement from quasi-phase-matching cascaded nonlinear optical frequency conversion

Wang

Liu

et al. 2019

Laser Phys. Lett.

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We propose an experimentally feasible scheme to produce bright four-color continuousvariable entanglement by intracavity quasi-phase-matching cascaded nonlinear optical frequency conversion in only one optical superlattice. The second, third and fourth harmonics can be generated by frequency doubling of the input fundamental field at frequency ω, the sum frequency of fundamental and second harmonic fields, and frequency doubling of the second harmonic field, respectively. The entanglement properties influenced by system parameters are theoretically discussed according to the sufficient inseparability criterion proposed by van Loock and Furusawa. Such compact multipartite continuous-variable entanglement has potential applications in quantum communication and computation networks.

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“…The coupled degenerate parametric down-conversion can generate bipartite [32][33][34] or two-color quadripartite CV entanglement [35] in traveling-wave configuration or in an optical cavity. Moreover, the coupled non-degenerate parametric down-conversion in an optical cavity can produce bright three-color six-partite entanglement [36]. Olsen et al studied the Kerr nonlinear coupler that produces bipartite CV entangled beams and can be used to demonstrate the Einstein-Podolsky-Rosen (EPR) paradox [37].…”

Section: Introductionmentioning

confidence: 99%

Implementation of bright six-partite entanglement by coupled intracavity sum frequency generation

Wang

Liu

et al. 2018

Laser Phys. Lett.

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Bright six-partite continuous-variable (CV) entanglement generated by the coupled intracavity sum frequency generation is investigated. The entanglement characteristics of reflected pump fields and the output sum frequency fields are discussed theoretically in symmetric and asymmetric cases by applying van Loock and Furusawa criteria for multipartite CV entanglement. Such compact tunable multipartite CV entanglement, generated from an experimentally feasible coupled system, could be used in integrated quantum communication and networks.

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Bright six-partite entanglement from coupled intracavity nondegenerate parametric down-conversion

Cited by 4 publications

References 40 publications

The generation of genuine quadripartite Einstein–Podolsky–Rosen steering in an optical superlattice

The generation of genuine quadripartite Einstein–Podolsky–Rosen steering in an optical superlattice

Bright four-color quadripartite entanglement from quasi-phase-matching cascaded nonlinear optical frequency conversion

Implementation of bright six-partite entanglement by coupled intracavity sum frequency generation

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