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Metrology experiments can be limited by the noise produced by the laser involved via small fluctuations in the laser's power or frequency. Typically, active power stabilization schemes consisting of an in-loop sensor and a feedback control…

We report on the study of the noise properties of laser light propagating through a cold 87Rb atomic sample held in a magneto-optical trap. The laser is tuned around the Fg = 2 \rightarrow Fe = 1, 2 D1 transitions of 87Rb. We observe…

量子物理 · 物理学 2013-03-11 Travis Horrom , Arturo Lezama , Salim Balik , Mark D. Havey , Eugeniy E. Mikhailov

Random fluctuations in the tune, beam offsets and beam size in the presence of the beam-beam interaction are shown to lead to significant particle diffusion and emittance growth in hadron colliders. We find that far from resonances high…

acc-phys · 物理学 2009-01-23 Tanaji Sen , James A. Ellison

We consider the influence of local noise on a generalized network of populations having positive and negative feedbacks. The population dynamics at the nodes is nonlinear, typically chaotic, and allows cessation of activity if the…

混沌动力学 · 物理学 2014-12-03 Anshul Choudhary , Vivek Kohar , Sudeshna sinha

The effect of small-amplitude noise on excitable systems with large time-scale separation is analyzed. It is found that small random perturbations of the fast excitatory variable result in the onset of a quasi-deterministic limit cycle…

定量方法 · 定量生物学 2007-05-23 Cyrill B. Muratov , Eric Vanden-Eijnden , Weinan E

A laser model is formulated in terms of quantum harmonic oscillators. Emitters in the low lasing states are usual harmonic oscillators, and emitters in the upper states are inverted harmonic oscillators. Diffusion coefficients, consistent…

量子物理 · 物理学 2022-11-23 Igor E. Protsenko , Alexander V. Uskov

The presence of noise in non linear dynamical systems can play a constructive role, increasing the degree of order and coherence or evoking improvements in the performance of the system. An example of this positive influence in a biological…

动力系统 · 数学 2016-09-07 M. -P. Zorzano , L. Vazquez

When two nuclei collide close to the speed of light, a fluid state known as the quark-gluon plasma is formed. Attempts to understand the dynamics of this fluid have generated significant research into dissipative relativistic fluid…

核理论 · 物理学 2024-02-21 Nicki Mullins , Mauricio Hippert , Jorge Noronha , Lorenzo Gavassino

Networks of interacting, communicating subsystems are common in many fields, from ecology, biology, epidemiology to engineering and robotics. In the presence of noise and uncertainty, inter- actions between the individual components can…

统计力学 · 物理学 2017-11-01 Ira B. Schwartz , Klimka Szwaykowska , Thomas W. Carr

In this article we present simple approaches to the calculation of P(i) (the probability distribution of current fluctuations) in a tunnel junction, and to the effect of the environment on noise measurements in terms of the modification of…

介观与纳米尺度物理 · 物理学 2007-05-23 Bertrand Reulet

We show that the spectral fluctuations of the Two-Body Random Ensemble (TBRE) exhibit 1/f noise. This result supports a recent conjecture stating that chaotic quantum systems are characterized by 1/f noise in their energy level…

混沌动力学 · 物理学 2008-12-18 A. Relano , R. A. Molina , J. Retamosa

Alkaline-earth like atoms with ultra-narrow optical transitions enable superradiance in steady state. The emitted light promises to have an unprecedented stability with a linewidth as narrow as a few millihertz. In order to evaluate the…

量子物理 · 物理学 2015-05-18 D. Meiser , M. J. Holland

We analyze the influence of classical Gaussian noise on Landau-Zener transitions during a two-level crossing in a time-dependent regular external field. Transition probabilities and coherence factors become random due to the noise. We…

统计力学 · 物理学 2009-11-10 V. L. Pokrovsky , S. Scheidl

In this paper, we investigate a Langevin model subjected to stochastic intensity noise (SIN), which incorporates temporal fluctuations in noise-intensity. We derive a higher-order Fokker-Planck equation (HFPE) of the system, taking into…

统计力学 · 物理学 2011-01-25 Yoshihiko Hasegawa , Masanori Arita

Electron shelving gives rise to bright and dark periods in the resonance fluorescence of a three-level atom. The corresponding incoherent spectrum contains a very narrow inelastic peak on top of a two-level-like spectrum. Using the theories…

量子物理 · 物理学 2018-10-08 Hector M. Castro-Beltran , Ricardo Roman-Ancheyta , Luis Gutierrez

Machine Learning and Deep Learning are computational tools that fall within the domain of artificial intelligence. In recent years, numerous research works have advanced the application of machine and deep learning in various fields,…

Experimental evidence of intrinsic noise induced coherence resonance in a glow discharge plasma is being reported. Initially the system is started at a discharge voltage (DV) where it exhibited fixed point dynamics, and then with the…

等离子体物理 · 物理学 2015-06-23 Pankaj Kumar Shaw , D. Saha , S. Ghosh , M. S. Janaki , A. N. S. Iyengar

We examine the noise-induced transition in a fluctuating bistable potential of a driven quantum system in thermal equilibrium. Making use of a Wigner canonical thermal distribution for description of the statistical properties of the…

统计力学 · 物理学 2007-05-23 Pulak Kumar Ghosh , Debashis Barik , Deb Shankar Ray

We study the spread of a quantum-mechanical wavepacket in a noisy environment, modeled using a tight-binding Hamiltonian. Despite the coherent dynamics, the fluctuating environment may give rise to diffusive behavior. When correlations…

统计力学 · 物理学 2019-07-29 Nisarga Paul , Ariel Amir

We have studied the time evolution of the fluctuations in the net baryon number for different initial conditions and space time evolution scenarios. We observe that the fluctuations at the freeze-out depend crucially on the equation of…

核理论 · 物理学 2009-11-07 Bedangadas Mohanty , Jan-e Alam , Tapan K. Nayak
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