XUV and x-ray elastic scattering of attosecond electromagnetic pulses on atoms

Rosmej, F. B.; Astapenko, V. A.; Lisitsa, V. S.

doi:10.1088/1361-6455/aa90cf

Cited by 14 publications

(5 citation statements)

References 22 publications

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“…This agrees with the dependence presented in Fig. 4 which shows the asymptotic excitation probability as a function of pulse duration for different spectral de-tunings calculated using formulas (2,8,9). One can see from this figure that for given parameters maximum magnitude has a curve with =0.1 in the range >600.…”

Section: Resultssupporting

confidence: 89%

“…2 shows the time dependence of the probability of excitation of QO from the ground to the nearest excited states (m=1, 2, 3) for different magnitudes of the amplitude of the electric field in the EMP. The asymptotic values of the excitation probability at large times, calculated using formulas (2,8,9), are also given here by thin solid lines. It follows from Fig.…”

Section: Resultsmentioning

confidence: 99%

“…A quantum harmonic oscillator is a unique physical model that can be analytically described when interacting with a perturbation of an arbitrary value outside the framework of perturbation theory [1,2]. On the other hand, the development of the methods of generation of ultra-short laser pulses (USP) [3,4] makes it relevant to consider the interaction of such pulses with various targets [5][6][7][8][9][10] including oscillatory systems [11,12]. So, in a previous work of the authors [12], the excitation of a quantum oscillator for the entire duration of the USP was considered, depending on the pulse duration and the frequency detuning of its carrier frequency from the own frequency of the oscillator and arbitrary value of electric field amplitude in the pulse.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamics of Time Evolution of Quantum Oscillator Excitation by Electromagnetic Pulses

Astapenko

Rosmej

Sakhno

2021

J. Exp. Theor. Phys.

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The paper is devoted to the theoretical investigation of time dependences of quantum oscillator excitation by electromagnetic pulses for arbitrary values of field amplitude in the pulse. We consider the harmonic oscillator without relaxation and excitation between stationary states. The general formula for excitation of quantum states as function of time is derived in terms of instant energy of associated classical oscillator in the field of electromagnetic pulse. Thus, it is established that time dependence of quantum oscillator excitation is completely determined by the energy of the associated classical oscillator at given moment of time. Using derived expression time dependence of quantum oscillator excitation is investigated in details including total excitation from ground state, excitation from excited states, total excitation probability and corresponding excitation spectra.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamics of Time Evolution of Quantum Oscillator Excitation by Electromagnetic Pulses

Astapenko

Rosmej

Sakhno

2021

J. Exp. Theor. Phys.

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“…X-ray USPs are spatially inhomogeneous; consequently, their theoretical description is complicated because the dipole approximation is inapplicable. The problem becomes even more complicated if the fields of pulses are so strong that relativistic effects should be taken into account [81]. This problem is usually solved with various model approximations or numerical calculations.…”

Section: Wavefunction Of An Atomic Electron In the Field Of Ultrashort Pulsesmentioning

confidence: 99%

Diagnostics of Nanosystems with the Use of Ultrashort X-Ray Pulses: Theory and Experiment (Brief Review)

2021

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X-ray diffraction analysis is one of the famous widely used methods to study the structure of matter. It is well known that the scattering of ultrashort X-ray pulses can be used in X-ray diffraction analysis. The scattering of such pulses by various multiatomic objects and nanosystems leads to diffraction patterns carrying information not only on the structure of an object but also on the dynamics of processes in this object. Currently, it is technically possible to fabricate intense sources of femto-and attosecond pulses. New theories including the specificity of the interaction of such pulses with matter are not necessarily applied in the X-ray diffraction analysis involving ultrashort pulses. The inclusion of this specificity should lead to a better use of capabilities of sources of ultrashort pulses and to new scientific results. Sources of X-ray ultrashort pulses, widely used methods and new theories of the X-ray diffraction analysis including the specificity of the interaction of such pulses with matter, and modern experiments involving ultrashort pulses are briefly reviewed here.

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“…The HOM effect was first experimentally demonstrated by Hong et al in 1987 1 . HOM interference shows up in many instances, both in fundamental studies of quantum mechanics and in practical implementations of quantum technologies [2][3][4][5][6][7][8] . For example, one of the main practical applications of the HOM effect is to check the degree of indistinguishability of two incoming photons.…”

mentioning

confidence: 99%

Fluctuations in the detection of the HOM effect

Макаров

2020

Sci Rep

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Hong-Ou-Mandel (HOM) effect is known to be one of the main phenomena in quantum optics. It is believed that the effect occurs when two identical single-photon waves enter a 1:1 beam splitter, one in each input port. When the photons are identical, they will extinguish each other. In this work, it is shown that these fundamental provisions of the HOM interference may not always be fulfilled. One of the main elements of the HOM interferometer is the beam splitter, which has its own coefficients of reflection $$R = 1/2$$ R = 1 / 2 and transmission $$ T = 1/2 $$ T = 1 / 2 . Here we consider the general mechanism of the interaction of two photons in a beam splitter, which shows that in the HOM theory of the effect it is necessary to know (including when planning the experiment) not only $$ R = 1/2 $$ R = 1 / 2 and $$ T = 1/2 $$ T = 1 / 2 , but also their root-mean-square fluctuations $$ \Delta R ^ 2, \Delta T ^ 2 $$ Δ R 2 , Δ T 2 , which arise due to the dependence of $$R = R(\omega _1, \omega _2) $$ R = R ( ω 1 , ω 2 ) and $$ T = T (\omega _1, \omega _2) $$ T = T ( ω 1 , ω 2 ) on the frequencies where $$\omega _1, \omega _2$$ ω 1 , ω 2 are the frequencies of the first and second photons, respectively. Under certain conditions, specifically when the dependence of the fluctuations $$ \Delta R^2 $$ Δ R 2 and $$ \Delta T^2 $$ Δ T 2 can be neglected and $$ R=T=1/2 $$ R = T = 1 / 2 is chosen, the developed theory coincides with previously known results.

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XUV and x-ray elastic scattering of attosecond electromagnetic pulses on atoms

Cited by 14 publications

References 22 publications

Dynamics of Time Evolution of Quantum Oscillator Excitation by Electromagnetic Pulses

Dynamics of Time Evolution of Quantum Oscillator Excitation by Electromagnetic Pulses

Diagnostics of Nanosystems with the Use of Ultrashort X-Ray Pulses: Theory and Experiment (Brief Review)

Fluctuations in the detection of the HOM effect

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