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Výsledek výzkumu

Continuous nondemolition measurement of boson number in a driven damped harmonic oscillator

The continuous quantum nondemolition measurement represents a continuous "collapse" of the initial state into one of the photon number states. The initial state may be the stationary state of the driven damped harmonic

Optics (including laser optics and quantum optics)

  • 2017
  • Jimp
  • Odkaz
Výsledek výzkumu

Quantum Dynamics of Damped Harmonic Oscillator in Terms of Representations of the Group SU (1,1) and in Relation to Models of Continuous Measurement

Solution of the master equation for the damped harmonic oscillator is expressed in terms of the matrix elements of the representations of the group SU (1,1). We investigate the role of the group SU (1,1) in the optical atte...

BH - Optika, masery a lasery

  • 2001
  • Jx
Výsledek výzkumu

Identification of Material Damping of a Carbon Composite Bar and Study of Its Effect on Attenuation of Its Transient Lateral Vibrations

oscillating in the resonance area. During the transient period and due to nonlinear effects, the harmonic time-varying loading excites the bar response consisting of a numberof harmonic components. The specific damping...

JR - Ostatní strojírenství

  • 2015
  • Jx
  • Odkaz
Výsledek výzkumu

Simulation of damping force of polyurethan foam during harmonical kinematic excitation.

Dependence of damping force dissipation work on frequency of oscillation was measured during one period of harmonical exciting function. Measurement was realized exprssion for damping force for set parameter is pos...

JR - Ostatní strojírenství

  • 2004
  • D
Výsledek výzkumu

Bateman's dual system revisited: Quantization, geometric phase and relation with the ground-state energy of the linear harmonic oscillator

By using the Feynman-Hibbs prescription for the evolution amplitude, we quantize the system of a damped harmonic oscillator coupled to its time-reversed image, known as Bateman's dual system. The time-dependent quantum stat...

BE - Teoretická fyzika

  • 2004
  • Jx
Výsledek výzkumu

Dynamics of oscillator with piecewise linear model of impact interaction.

A harmonically excited oscillator having one degree of freedom with soft stop is analysed. The soft stop is modelled by piecewise linear spring and damping characteristics proportional to the stop deformation. The regions o...

BI - Akustika a kmity

  • 2001
  • D
Výsledek výzkumu

Generation of a tunable environment for electrical oscillator systems

of random-frequency harmonic oscillator systems. Even though the noise-free evolution of harmonic oscillator systems can be easily implemented, the way to experimentally random-frequency harmonic osci...

BH - Optika, masery a lasery

  • 2014
  • Jx
  • Odkaz
Výsledek výzkumu

Damping properties of Aramid at vibration contact

Dry friction damping contacts are very often used for damping of turbine blades in the last years. However, the real friction properties of different contact couples are not yet known in detail. Therefore an experimental study with ...

BI - Akustika a kmity

  • 2012
  • D
Výsledek výzkumu

Frequency propertis of guitar by FEM

Dynamic properties of musical instruments are described by frequency range response. In this measurement the instrument is loaded with harmonic changing loads. In the work the model of acoustical guitar made in ANSYS program is describe load...

BI - Akustika a kmity

  • 2008
  • D
Výsledek výzkumu

Application of explicit formulation of damping force of polyurethane foam in case of harmonic kinematic excitation

Explicit formulation for damping force evaluation is applied for wide range of parameters of harmonical excitation in case of dynamical compression loading....

JR - Ostatní strojírenství

  • 2008
  • D
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