We study spin squeezing, an intrinsically quantum property, in the quantum kicked top model exhibiting chaotic behaviours in the classical limit. We show that spin squeezing can reveal the underlying chaotic and regular structures in phase space given by a sphere with a unit radius, namely, spin squeezing vanishes after a very short time for an initial spin coherent state centred in a chaotic r...

Squeezing of light’s quantum noise requires temporal rearranging of photons. This again corresponds to creation of quantum correlations between individual photons. Squeezed light is a non-classical manifestation of light with great potential in high-precision quantum measurements, for example in the detection of gravitational waves [1]. Equally promising applications have been proposed in quant...

In this paper, we investigate into the numerical and analytical relationship between the dynamically generated quadrature squeezing and entanglement within a coupled harmonic oscillator system. The dynamical relation between these two quantum features is observed to vary monotically, such that an enhancement in entanglement is attained at a fixed squeezing for a larger coupling constant. Surpri...

A general analysis of squeezing transformations for two mode systems is given based on the four dimensional real symplectic group Sp(4,R). Within the framework of the unitary metaplectic representation of this group, a distinction between compact photon number conserving and noncompact photon number nonconserving squeezing transformations is made. We exploit the Sp(4,R) − SO(3, 2) local isomorp...

A recent study in South Africa has confirmed, for the first time, that a vaginal gel formulation of the antiretroviral drug Tenofovir, when applied topically, significantly inhibits sexual HIV transmission to women [10]. However the gel for this drug, and anti-HIV microbicide gels in general, have not been designed using full understanding of how gel spreading and retention in the vagina govern...

We apply the Green’s function method to determine the global degree of squeezing and the transverse spatial distribution of quantum fluctuations of solitons in Kerr media. We show that both scalar bright solitons and multimode vector solitons experience strong squeezing on the optimal quadrature. For vector solitons, this squeezing is shown to result from an almost perfect anti-correlation betw...

Quantum field theoretic approach is used to describe the squeezing of the electromagnetic field in its most complete form that takes into account temporal and spatial characteristics of the squeezed state. This approach enables one to study the propagation of the “squeezing wave” in space-time. A simple example of a weak squeezing, that allows for all calculations to be done analytically, is di...

Hybrid nanofluids outperform mono in terms of heat transmission. They can be found exchangers, the automobile industry, transformer cooling, and electronic addition to solar collectors military equipment. The primary goal this study is scrutinize magnetohydrodynamic hybrids nanofluid (Copper-oxides Titanium dioxide/water) [Formula: see text] flow two parallel plates using walls suction/injectio...

AIM Urethral pressure reflectometry (UPR) is a new method for measuring pressure and cross-sectional area in the urethra. Our aim was to investigate if the UPR parameters at rest and during squeeze were unchanged after TVT. METHODS The technique enables measurement along the entire length of the urethra simultaneously and avoids the common artefacts encountered with conventional catheters. Tw...