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Quantum-squeezing effects of strained multilayer graphene NEMS.

Xu Y, Yan S, Jin Z, Wang Y - Nanoscale Res Lett (2011)

Bottom Line: Quantum squeezing can improve the ultimate measurement precision by squeezing one desired fluctuation of the two physical quantities in Heisenberg relation.We propose a scheme to obtain squeezed states through graphene nanoelectromechanical system (NEMS) taking advantage of their thin thickness in principle.Our research promotes the measured precision limit of graphene-based nano-transducers by reducing quantum noises through squeezed states.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China. yangxu-isee@zju.edu.cn.

ABSTRACT
Quantum squeezing can improve the ultimate measurement precision by squeezing one desired fluctuation of the two physical quantities in Heisenberg relation. We propose a scheme to obtain squeezed states through graphene nanoelectromechanical system (NEMS) taking advantage of their thin thickness in principle. Two key criteria of achieving squeezing states, zero-point displacement uncertainty and squeezing factor of strained multilayer graphene NEMS, are studied. Our research promotes the measured precision limit of graphene-based nano-transducers by reducing quantum noises through squeezed states.

No MeSH data available.


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Schematic of a double-clamped graphene NEMS device.
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Figure 1: Schematic of a double-clamped graphene NEMS device.

Mentions: A typical NEMS device with a double-clamped free-standing graphene membrane is schematically shown in Figure 1. The substrate is doped Si with high conductivity, and the middle layer is SiO2 insulator. A pump voltage can be applied between the membrane and the substrate. The experimental data of the devices are used in our simulation [15]. For graphene, we use a Young's modulus of E = 1.03 × 1012 Pa, volumetric mass density of ρ = 2200 kg/m3, based on previous theories and scanning tunneling microscope experiments [13,15,16].


Quantum-squeezing effects of strained multilayer graphene NEMS.

Xu Y, Yan S, Jin Z, Wang Y - Nanoscale Res Lett (2011)

Schematic of a double-clamped graphene NEMS device.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211445&req=5

Figure 1: Schematic of a double-clamped graphene NEMS device.
Mentions: A typical NEMS device with a double-clamped free-standing graphene membrane is schematically shown in Figure 1. The substrate is doped Si with high conductivity, and the middle layer is SiO2 insulator. A pump voltage can be applied between the membrane and the substrate. The experimental data of the devices are used in our simulation [15]. For graphene, we use a Young's modulus of E = 1.03 × 1012 Pa, volumetric mass density of ρ = 2200 kg/m3, based on previous theories and scanning tunneling microscope experiments [13,15,16].

Bottom Line: Quantum squeezing can improve the ultimate measurement precision by squeezing one desired fluctuation of the two physical quantities in Heisenberg relation.We propose a scheme to obtain squeezed states through graphene nanoelectromechanical system (NEMS) taking advantage of their thin thickness in principle.Our research promotes the measured precision limit of graphene-based nano-transducers by reducing quantum noises through squeezed states.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China. yangxu-isee@zju.edu.cn.

ABSTRACT
Quantum squeezing can improve the ultimate measurement precision by squeezing one desired fluctuation of the two physical quantities in Heisenberg relation. We propose a scheme to obtain squeezed states through graphene nanoelectromechanical system (NEMS) taking advantage of their thin thickness in principle. Two key criteria of achieving squeezing states, zero-point displacement uncertainty and squeezing factor of strained multilayer graphene NEMS, are studied. Our research promotes the measured precision limit of graphene-based nano-transducers by reducing quantum noises through squeezed states.

No MeSH data available.


Related in: MedlinePlus