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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.


Related in: MedlinePlus

Δxzp versus multilayer graphene film sizes with strains. (a) Monolayer graphene. (b) Bilayer graphene. (c) Trilayer graphene.
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Figure 2: Δxzp versus multilayer graphene film sizes with strains. (a) Monolayer graphene. (b) Bilayer graphene. (c) Trilayer graphene.

Mentions: where ρ' represents the effective volumetric mass density of graphene film after applying strain. The typical measured strains in [15] are ε = 4 × 10-5 when ρ' = 4ρ and ε = 2 × 10-4 when ρ' = 6ρ. Based on Equation 2, measurable Δxzp of the strained multilayer graphene films of various sizes are shown in Figure 2, and typical Δxzp values of graphene NEMS under various ε are summarized in Table 1.


Quantum-squeezing effects of strained multilayer graphene NEMS.

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

Δxzp versus multilayer graphene film sizes with strains. (a) Monolayer graphene. (b) Bilayer graphene. (c) Trilayer graphene.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 2: Δxzp versus multilayer graphene film sizes with strains. (a) Monolayer graphene. (b) Bilayer graphene. (c) Trilayer graphene.
Mentions: where ρ' represents the effective volumetric mass density of graphene film after applying strain. The typical measured strains in [15] are ε = 4 × 10-5 when ρ' = 4ρ and ε = 2 × 10-4 when ρ' = 6ρ. Based on Equation 2, measurable Δxzp of the strained multilayer graphene films of various sizes are shown in Figure 2, and typical Δxzp values of graphene NEMS under various ε are summarized in Table 1.

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