搜索结果: 1-15 共查到“物理学 controlling”相关记录26条 . 查询时间(0.062 秒)
It’s a paradox that has long vexed researchers in the field of optics.To control a light source, another light source that uses as much energy — if not more — is often required. The setup works, but i...
The reproducibility of thermomagnetically written domains in rare earth-transition metal thin films was studied and as a result films capable of supporting very regular domains were fabricated.To unde...
Tailoring THz radiation by controlling tunnel photoionization events in gases
Tailoring THz radiation controlling tunnel photoionization events gases
2011/8/3
Abstract: Applications ranging from nonlinear terahertz spectroscopy to remote sensing require broadband and intense THz radiation which can be generated by focusing two-color laser pulses into a gas....
Optimizing and controlling functions of complex networks by manipulating rich-club connections
Optimizing and controlling functions complex networks rich-club connections
2011/9/6
Traditionally, there is no evidence suggesting that there are strong ties between the rich-club property and the function of complex networks. In this study, we find that whether a very small portion ...
Controlling the second-harmonic in a phase matched negative-index metamaterial
second-harmonic negative-index Nonlinear metamaterials (NLMMs)
2011/8/26
Nonlinear metamaterials (NLMMs) have been predicted to support new and exciting domains in the manipulation of light, including novel phase matching schemes for wave mixing. Most notable is the so-cal...
Controlling double ionization of atoms in intense bichromatic laser pulses
ionization atoms intense bichromatic laser pulses
2010/11/17
We consider the classical dynamics of a two-electron system subjected to an intense bichromatic linearly polarized laser pulse. By varying the parameters of the field, such as the phase lag and the r...
Controlling surface plasmon polaritons in transformed coordinates
plasmon polaritons transformed coordinates
2010/11/16
Transformational optics allow for a markedly enhanced control of the electromagnetic wave trajectories within metamaterials with interesting applications ranging from perfect lenses to invisibility c...
Controlling the Colour of Metals: Intaglio and Bas-Relief Metamaterials
Controlling the Colour of Metals Bas-Relief Metamaterials
2010/11/16
The fabrication of indented ('intaglio') or raised ('bas-relief') sub-wavelength metamaterial patterns on a metal surface provides a mechanism for changing and controlling the colour of the metal wit...
Controlling phonon entanglement and squeezing via one- and two-phonon interference
Controlling phonon entanglement squeezing two-phonon interference
2010/11/19
When ultrafast laser pulse strikes the crystal with a van Hove singularity in the phonon density of states, it creates a pair of anti-correlated in wave vector acoustic phonons. As a result, the atomi...
Controlling qubit arrays with anisotropic XXZ Heisenberg interaction by acting on a single qubit
Controlling qubit arrays anisotropic XXZ Heisenberg interaction acting single qubit
2010/11/9
We investigate anisotropic $XXZ$ Heisenberg spin-1/2 chains with control fields acting on one of the end spins, with the aim of exploring local quantum control in arrays of interacting qubits. In this...
Controlling the quantum stereodynamics of ultracold bimolecular reactions
Controlling quantum stereodynamics ultracold bimolecular reactions
2010/11/5
Chemical reaction rates often depend strongly on stereodynamics, namely the orientation and movement of molecules in three-dimensional space. An ultracold molecular gas, with a temperature below 1 uK...
Controlling single diamond NV color center photoluminescence spectrum with a Fabry-Perot microcavity
Controlling single diamond NV color center photoluminescence spectrum Fabry-Perot microcavity
2010/11/9
We present both theoretical and experimental results on fluorescence of single defect centers in diamond nanocrystals embedded in a planar dielectric microcavity. From a theoretical point of view, we ...
Hidden possibilities in controlling optical soliton in fiber guided doped resonant medium
optical soliton fiber guided doped resonant medium
2010/10/27
Fiber guided optical signal, propagating in a Erbium doped resonant medium, is known to produce
cleaner solitonic pulse described by the self induced transparency (SIT) coupled to the nonlinear Schr¨...
A technique for regulating the tempo of heartbeats with short flashes of light could lead to a less intrusive type of pacemaker, say researchers in the US. A team led by Andrew Rollins at Case Western...
Controlling nonholonomic Chaplygin systems
Nonholonomic systems vakonomic approach Chaplygin systems
2010/6/30
In this paper we deal with the problem of controlling some Chaplygin systems in the framework of the vakonomic approach for nonholonomic systems. Equations of motion for these systems are obtained whi...