Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Experimental and Theoretical Physics Letters

On the possibility of observing nonadiabatic atomic transitions in a laser field and their application to nanolithography

Sergey V. Prants

Published Dec 1, 2010• 3 citations
Publisher

Abstract

The scheme of an experiment has been proposed to observe nonadiabatic atomic transitions in the standingwave laser field and splitting of atomic wave packets on the nodes of the standing wave induced by these transitions in a certain range of optical detuning. The effect can be implemented in atomic-optical nanolithography for making spatial atomic structures with a period much smaller than the optical wavelength.

DOI
10.1134/s0021364010230025

Related papers

Splitting of atomic beams by light for creation of high-resolution spatial structures in optical nanolithography

V. O. Vitkovsky, Sergei V Prants

Diffraction of atomic wave packets from a standing laser wave with a Gaussian profile is studied theoretically and numerically in pursuing the aim of creating high-resolution spatial structures in optical nanolithography. To this end, we propose to use nonadiabatic transitions between two optical potentials which take place when square of the value of detuning off the resonance is approximately equal to the Doppler shift. In this case, atomic wave packets experience splitting at nodes of the standing wave, which allows creating atomic structures on a substrate with a period substantially smaller than the standard nanofabrication limit equal to half the wavelength of light. We propose a scheme of the experiment for the observation of nonadiabatic transitions and splitting of the wave of matter caused by them. A number of computer simulations with parameters corresponding to real atoms have been performed, which exhibit this effect in both momentum and coordinate spaces.

Optics and Spectroscopy•Jan 1, 2013•6 citations

Atom Manipulation Using Optical Fields

P. R. Berman, Sletor, Tycho

The long range goal of this project was the creation of nanostructures using light fields to manipulate atoms. By passing an atomic beam through one or more standing wave light fields, it is possible to create modulations in the atomic density having periods which are a fraction of the period of the standing wave light fields. Patterns having periods as small as lambda/10 were observed using optical masks and clear evidence for matter-wave effects were established. Several theoretical methods for achieving sub-lambda matter wave patterns were developed, Moreover it was shown that it is possible to create optical lattices having reduced periodicity using Raman transitions in a novel atom-field geometry Experiments were carried out in both magneto-optical traps and atomic beams. In both experimental set-ups, pulsed standing wave optical fields were used to excite the atoms. At some later time the atoms were probed by a traveling wave field, revealing the spatial patterns that had evolved as a result of the atom-field interaction.

•Sep 15, 2004•0 citations

Coherent atomic beam splitter control for nano-scale atom wave packet lithography

Sergey Borisenok, Yu. Rozhdestvensky

Atomic beam splitter needs for the practical realization of nano-scale lithography by coherent scattering of the atoms. We consider the different types of atomic beam splitters, which could be used for the creation of the space structures with nano-scale period. We concentrate to a few main schemes of an interaction between an atom beam and optical radiation, which can produce a large angle splitting of atom beam into only two main momentum components: multi Bragg scattering an atom wave packet in standing wave; coherent splitting by scattering of an atom wave packet in standing wave with modulated intensity, when the intensity of the standing wave changes harmonically. We discuss also the experimental possibility of an atom selection in internal states for obtaining of space periodical structure with high clearance.

IEEE International Workshop on Workload Characterization (WWC)•Apr 23, 2004•5 citations

Anomalous spatial concentration of atoms in the field of a standing light wave

Denis V. Brazhnikov, R. Ya. Ilenkov, Прудников Олег Николаевич +5 more

The stationary momentum and coordinate distributions of two-level atoms in the field of a one-dimensional standing light wave have been studied. A qualitatively new effect—the predominant concentration of atoms outside of the minima of the optical potential—has been detected in the regime of moderate saturation of an atomic transition and red frequency detuning. This effect has been qualitatively interpreted. Calculations have been performed using the quantum kinetic equation for the atomic density matrix with the complete inclusion of recoil and localization effects in an arbitrary-intensity light field. In addition to theoretical significance, the results can be useful for atomic nanolithography and frequency standards based on optical gratings.

Journal of Experimental and Theoretical Physics Letters•Jun 1, 2012•4 citations

Tunable atom lithography scheme with high resolution in atomic system

Mingdong Liu, Hai-Hua Wang, Lei Wang +5 more

Abstract We theoretically propose a scheme that utilizes the excited state of a Λ-type three-level atom system for atom lithography. A standing-wave coupling field and a probe field provide localized probability distribution of the excited atoms. Unlike the previous studies in atom localization, we focus on splitting the single-peak structure localized on the node of the standing-wave field to a double-peak structure. The shift distance of double-peak related to the parameters of external laser fields is investigated. The period of lithography pattern could reach λ/4, while the resolution of lithography is promising to be smaller than 0.02λ by adjusting system parameters. This scheme can be extended to form a two-dimensional pattern for lithography.

Physica Scripta•Aug 23, 2023•2 citations

Multi-zone coherent atomic beam splitter control by raman transitions

Sergey Borisenok, Yu. Rozhdestvensky, Yu.D. Selishchev

Control in multi-zone atomic beam splitters needs for the practical realization of nanoscale lithography by coherent scattering of the atoms. We propose an effective atomic beam splitter based on the interaction of three-level atom with the field of the standing optical waves having relative spatial shifts. It is shown, that using of several interaction zones of the standing waves having the different spatial shift it make possible to reach the splitting 2n/spl planck/k (where n is the number of zone) in each of lower three-level /spl Lambda/-atom state.

International Conference Physics and Control•Oct 4, 2006•0 citations
The scheme of an experiment has been proposed to observe nonadiabatic atomic transitions in the standingwave laser field and splitting of atomic wave packets on the nodes of the standing wave induced by these transitions in a certain range of optical detuning. The effect can be implemented in atomic-optical nanolithography for making spatial atomic structures with a period much smaller than the optical wavelength.
Diffraction of atomic wave packets from a standing laser wave with a Gaussian profile is studied theoretically and numerically in pursuing the aim of creating high-resolution spatial structures in optical nanolithography. To this end, we propose to use nonadiabatic transitions between two optical potentials which take place when square of the value of detuning off the resonance is approximately equal to the Doppler shift. In this case, atomic wave packets experience splitting at nodes of the standing wave, which allows creating atomic structures on a substrate with a period substantially smaller than the standard nanofabrication limit equal to half the wavelength of light. We propose a scheme of the experiment for the observation of nonadiabatic transitions and splitting of the wave of matter caused by them. A number of computer simulations with parameters corresponding to real atoms have been performed, which exhibit this effect in both momentum and coordinate spaces.
The long range goal of this project was the creation of nanostructures using light fields to manipulate atoms. By passing an atomic beam through one or more standing wave light fields, it is possible to create modulations in the atomic density having periods which are a fraction of the period of the standing wave light fields. Patterns having periods as small as lambda/10 were observed using optical masks and clear evidence for matter-wave effects were established. Several theoretical methods for achieving sub-lambda matter wave patterns were developed, Moreover it was shown that it is possible to create optical lattices having reduced periodicity using Raman transitions in a novel atom-field geometry Experiments were carried out in both magneto-optical traps and atomic beams. In both experimental set-ups, pulsed standing wave optical fields were used to excite the atoms. At some later time the atoms were probed by a traveling wave field, revealing the spatial patterns that had evolved as a result of the atom-field interaction.
Atomic beam splitter needs for the practical realization of nano-scale lithography by coherent scattering of the atoms. We consider the different types of atomic beam splitters, which could be used for the creation of the space structures with nano-scale period. We concentrate to a few main schemes of an interaction between an atom beam and optical radiation, which can produce a large angle splitting of atom beam into only two main momentum components: multi Bragg scattering an atom wave packet in standing wave; coherent splitting by scattering of an atom wave packet in standing wave with modulated intensity, when the intensity of the standing wave changes harmonically. We discuss also the experimental possibility of an atom selection in internal states for obtaining of space periodical structure with high clearance.
The stationary momentum and coordinate distributions of two-level atoms in the field of a one-dimensional standing light wave have been studied. A qualitatively new effect—the predominant concentration of atoms outside of the minima of the optical potential—has been detected in the regime of moderate saturation of an atomic transition and red frequency detuning. This effect has been qualitatively interpreted. Calculations have been performed using the quantum kinetic equation for the atomic density matrix with the complete inclusion of recoil and localization effects in an arbitrary-intensity light field. In addition to theoretical significance, the results can be useful for atomic nanolithography and frequency standards based on optical gratings.
Abstract We theoretically propose a scheme that utilizes the excited state of a Λ-type three-level atom system for atom lithography. A standing-wave coupling field and a probe field provide localized probability distribution of the excited atoms. Unlike the previous studies in atom localization, we focus on splitting the single-peak structure localized on the node of the standing-wave field to a double-peak structure. The shift distance of double-peak related to the parameters of external laser fields is investigated. The period of lithography pattern could reach λ/4, while the resolution of lithography is promising to be smaller than 0.02λ by adjusting system parameters. This scheme can be extended to form a two-dimensional pattern for lithography.
Control in multi-zone atomic beam splitters needs for the practical realization of nanoscale lithography by coherent scattering of the atoms. We propose an effective atomic beam splitter based on the interaction of three-level atom with the field of the standing optical waves having relative spatial shifts. It is shown, that using of several interaction zones of the standing waves having the different spatial shift it make possible to reach the splitting 2n/spl planck/k (where n is the number of zone) in each of lower three-level /spl Lambda/-atom state.