Auto-correlative weak-value amplification under strong noise background

Huang, Jinghui; Hu, Xiangyun; Duan, Xue-Ying; He, Feifan; Chen, Huan; An, Jianqi; Wang, Guangjun

doi:10.48550/arxiv.2203.15231

Cited by 2 publications

(1 citation statement)

References 41 publications

(72 reference statements)

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“…Recently, the weak-value-amplification (WVA) technique which came from the quantum weak measurement has become an effective tool in metrology [26,27,28,29,30,31,32,33]. The weak measurement with post-selection was first proposed by Aharonov et al and they found that the result of a measurement of a component of the spin -1/2 particle can be magnified to 100 [34].…”

Section: Introductionmentioning

confidence: 99%

Weak-value-amplification enhancement of the magneto-optical Kerr effect in nanoscale layered structures

Huang,

Lundeen,

Jordan

et al. 2023

Phys. Rev. A

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The achievement of the larger Magneto-optical Kerr rotations in nanoscale layered structures is extremely important for both theoretical understandings and practical applications. In this paper, we propose a scheme for simultaneously detecting the Kerr rotation and the Kerr ellipticity based on the weak-value amplification (WVA) technique. In the Magneto-optical Kerr effect study for the layered structure, the Kerr rotation and the Kerr ellipticity are obtained by calculating the boundary matrix and the transmission matrix of the layered structure. Then, the Kerr rotation and the Kerr ellipticity can be effectively amplified as the parameters of the pre-selection in the standard weak measurement. In addition, we numerically investigate the dependence of the thickness d of Co in the nanoscale layered structure HfO 2 (10 nm)/Co(d nm)/ HfO 2 (30 nm)/Al(40 nm)/Si films and the Co(d nm)/Si films at the measurement range of 5 nm < d < 50 nm. Simulation results confirmed that the Kerr rotation and the Kerr ellipticity can be effectively amplified by choosing the appropriate post-selected state, especially when the nanoscale layered structure shows no advantage for enhancing Kerr signals over the Co(d nm)/Si films without the weak-value-amplification technique. The realization of enhancement of Kerr signals in a nanoscale layered structure may have an important application in the magneto-optic (MO) parameters measurement and the MO properties in a more complex nanoscale structure.

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Section: Introductionmentioning

confidence: 99%

Weak-value-amplification enhancement of the magneto-optical Kerr effect in nanoscale layered structures

Huang,

Lundeen,

Jordan

et al. 2023

Phys. Rev. A

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show abstract

Weak-value-amplification enhancement of the Magneto-optical Kerr effect in nanoscale layered structures

Huang

Lundeen

Dada

et al. 2022

Preprint

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The achievement of the larger Magneto-optical Kerr rotations in nanoscale layered structures is extremely important for both theoretical understandings and practical applications. In this paper, we propose a scheme for simultaneously detecting the Kerr rotation and the Kerr ellipticity based on the weak-value amplification (WVA) technique. In the Magneto-optical Kerr effect study for the layered structure, the Kerr rotation and the Kerr ellipticity are obtained by calculating the boundary matrix and the transmission matrix of the layered structure. Then, the Kerr rotation and the Kerr ellipticity can be effectively amplified as the parameters of the pre-selection in the standard weak measurement. In addition, we numerically investigate the dependence of the thickness d of Co in the nanoscale layered structure HfO2 (10~nm)/Co(d nm)/ HfO2 (30 nm)/Al(40 nm)Si films and the Co(d nm)Si films at the measurement range of 5 nm < d < 50 nm. Simulation results confirmed that the Kerr rotation and the Kerr ellipticity can be effectively amplified by choosing the appropriate post-selected state, especially when the nanoscale layered structure shows no advantage for enhancing Kerr signals over the Co(d nm)/Si films without the weak-value-amplification technique. The realization of enhancement of Kerr signals in a nanoscale layered structure may have an important application in the magneto-optic (MO) parameters measurement and the MO properties in a more complex nanoscale structure.

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Auto-correlative weak-value amplification under strong noise background

Cited by 2 publications

References 41 publications

Weak-value-amplification enhancement of the magneto-optical Kerr effect in nanoscale layered structures

Weak-value-amplification enhancement of the magneto-optical Kerr effect in nanoscale layered structures

Weak-value-amplification enhancement of the Magneto-optical Kerr effect in nanoscale layered structures

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