Quantum friction between graphene sheets

Farías, M. Belén; Fosco, C. D.; Lombardo, Fernando C.; Mazzitelli, Francisco D.

doi:10.1103/physrevd.95.065012

Cited by 40 publications

(43 citation statements)

References 29 publications

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“…More recent results can be found in [236][237][238][239][240][241][242][243][244][245][246][247][248][249][250]. In particular, it was shown in [246] that the friction force between two graphene sheets is nonzero only if the relative velocity is larger than the Fermi velocity of the charge carriers in graphene.…”

Section: Quantum Friction For Moving Surfacesmentioning

confidence: 95%

Fifty Years of the Dynamical Casimir Effect

Dodonov

2020

Physics

158

105

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Section: Quantum Friction For Moving Surfacesmentioning

confidence: 95%

Fifty Years of the Dynamical Casimir Effect

Dodonov

2020

Physics

158

105

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show abstract

“…[37] the Casimir friction phenomenon in a system consisting of two flat, infinite, and parallel graphene sheets, which are coupled to the vacuum electromagnetic field has been considered. In fact, the transverse contribution to the imaginary part of the effective action in [37] is qualitatively (as a function of v) similar to the one shown in Eq. (2).…”

mentioning

confidence: 99%

Geometric phase corrections on a moving particle in front of a dielectric mirror

Lombardo¹,

Villar²

2017

EPL

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-We consider an atom (represented by a two-level system) moving in front of a dielectric plate, and study how traces of dissipation and decoherence (both effects induced by vacuum field fluctuations) can be found in the corrections to the unitary geometric phase accumulated by the atom. We consider the particle to follow a classical, macroscopically-fixed trajectory and integrate over the vacuum field and the microscopic degrees of freedom of both the plate and the particle in order to calculate friction effects. We compute analytically and numerically the non-unitary geometric phase for the moving qubit under the presence of the quantum vacuum field and the dielectric mirror. We find a velocity dependence in the correction to the unitary geometric phase due to quantum frictional effects. We also show in which cases decoherence effects could, in principle, be controlled in order to perform a measurement of the geometric phase using standard procedures as Ramsey-like interferometry.Introduction. -A system can retain the information of its motion when it undergoes a cyclic evolution in the form of a geometric phase, which was first put forward by Pancharatman in optics [1] and later studied explicitly by Berry in a general quantal system [2]. Since the work of Berry, the notion of geometric phases has been shown to have important consequences for quantum systems. Berry demonstrated that quantum systems could acquire phases that are geometric in nature. He showed that, besides the usual dynamical phase, an additional phase related to the geometry of the space state is generated during an adiabatic evolution. Since then, great progress has been achieved in this field. Due to its global properties, the geometric phase is propitious to construct fault tolerant quantum gates. In this line of work, many physical systems have been investigated to realise geometric quantum computation, such as NMR (Nuclear Magnetic Resonance) [3], Josephson junction [4], Ion trap [5] and semiconductor quantum dots [6]. The quantum computation scheme for the geometric phase has been proposed based on the Abelian or non-Abelian geometric concepts, and the geometric phase has been shown to be robust against faults in the presence of some kind of external noise due to the geometric nature of Berry phase [7][8][9]. It was therefore seen that interactions play an important role in the realisation of some specific operations. As the gates operate

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“…The NEMS technology is distinguished from molecular nanotechnology or molecular electronics in that the latter must also consider surface chemistry and solid-state phonon and electronic quantum mechanical aspects which can affect mechanical, electric and optoelectronic properties, friction and that can cause high signal/noise ratio ([89,90,91,92]. Mechanical deformation and electrical contact properties and adhesion between carbon nanotubes are important aspects of their quality and dynamic performances [93,94,95,96,97,98] and explaining why they must be selected and controlled upon their characteristics, size and defect content.…”

Section: Brief Review On Main Mems and Nems Characteristicsmentioning

confidence: 99%

Selective Carbon Material Engineering for Improved MEMS and NEMS

Neuville¹

2019

Micromachines

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The development of micro and nano electromechanical systems and achievement of higher performances with increased quality and life time is confronted to searching and mastering of material with superior properties and quality. Those can affect many aspects of the MEMS, NEMS and MOMS design including geometric tolerances and reproducibility of many specific solid-state structures and properties. Among those: Mechanical, adhesion, thermal and chemical stability, electrical and heat conductance, optical, optoelectronic and semiconducting properties, porosity, bulk and surface properties. They can be affected by different kinds of phase transformations and degrading, which greatly depends on the conditions of use and the way the materials have been selected, elaborated, modified and assembled. Distribution of these properties cover several orders of magnitude and depend on the design, actually achieved structure, type and number of defects. It is then essential to be well aware about all these, and to distinguish and characterize all features that are able to affect the results. For this achievement, we point out and discuss the necessity to take into account several recently revisited fundamentals on carbon atomic rearrangement and revised carbon Raman spectroscopy characterizing in addition to several other aspects we will briefly describe. Correctly selected and implemented, these carbon materials can then open new routes for many new and more performing microsystems including improved energy generation, storage and conversion, 2D superconductivity, light switches, light pipes and quantum devices and with new improved sensor and mechanical functions and biomedical applications.

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Quantum friction between graphene sheets

Cited by 40 publications

References 29 publications

Fifty Years of the Dynamical Casimir Effect

Fifty Years of the Dynamical Casimir Effect

Geometric phase corrections on a moving particle in front of a dielectric mirror

Selective Carbon Material Engineering for Improved MEMS and NEMS

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