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

European Quantum Electronics Conference (EQEC)

Two-dimensional velocity selection of atoms

Eugeny Korsunsky, Dmitry V. Kosachiov, Yu. Rozhdestvensky, Laurentius Windholz

Published Aug 24, 2005• 0 citations
Publisher
DOI
10.1109/eqec.1994.698122

Related papers

Two-dimensional atomic velocity selection by a resonantly enhanced Raman transition

Eugeny Korsunsky, Dmitry V. Kosachiov, Yu. Rozhdestvensky

Optics Communications•Jun 1, 1995•1 citation

Cooling using velocity or mode selection for alkali-metal atoms

Ralph Dum

Velocity (mode) selection accumulates atoms in long-lived atomic (dark) states thereby reducing the entropy and energy. We present a scheme using a two-frequency laser field acting on two separate dipole transitions that supports dark atomic states in a spatially arbitrary three-dimensional (3D) field configuration. Monte Carlo simulations of a 1D model of velocity selection demonstrate a reduction of the velocity spread of the atomic ensemble to less than 1 nK. Schemes to combine selection and trapping of atoms to reduce phase space density in 3D by mode selection are discussed. \textcopyright{} 1996 The American Physical Society.

Physical Review A•Oct 1, 1996•3 citations

Velocity selection of atoms from beams by a Raman method

Eugeny Korsunsky, D. V. Kosachev, Boris G. Matisov +1 more

•Mar 1, 1992•3 citations

Velocity selection of double Λ-atoms

Dmitry V. Kosachiov, Yu. Rozhdestvensky

European Quantum Electronics Conference (EQEC)•Aug 24, 2005•0 citations

Velocity Selection Technique for High-Resolution Spectroscopy

Eugeny Korsunsky, Dmitry V. Kosachiov, Yu. Rozhdestvensky

It is known [1-3], that the samples of atoms with a velocity spread much lower than the recoil velocity uR= ħk/M (k is the wave number of exciting light field, M is the mass of atom) can be obtained by use of velocity selection with stimulated Raman transitions. A theoretical analysis of the velocity selection method is presented in [2,3]. So, it was shown in [2] that the formation of such narrow velocity structures is performed not only by the counterpropagating, but also by co-propagating light waves. This fact allows to form the two-dimensional velocity distribution of the widths δvx,y « uR by the velocity selection technique using laser configuration as in Fig. 1b.

High Resolution Spectroscopy•Jan 1, 1993•0 citations

Scaling laws in velocity-selective coherent-population-trapping laser cooling

Giovanna Morigi, Bruno Zambon, Norbert Leinfellner +1 more

One-dimensional laser cooling based on velocity-selective coherent population trapping (VSCPT) has been investigated numerically through the solution of the optical Bloch equations and through a Monte Carlo analysis. The 1\ensuremath{\rightarrow}1 and 2\ensuremath{\rightarrow}2 transitions have been examined as a function of the atomic recoil frequency, the spontaneous-emission decay rate, and the Rabi frequency of the cooling laser. It has been found that for a large set of those parameters, the VSCPT cooling process may be described through scaling-law relations. The scaling laws are not valid at long atom-laser interaction times or large Rabi frequencies, where the atomic Doppler shift plays a significant role in the atomic motion evolution. Similar results for two atomic transitions suggest the validity of the scaling law for any one-dimensional VSCPT process. \textcopyright{} 1996 The American Physical Society.

Physical Review A•Apr 1, 1996•11 citations
Velocity (mode) selection accumulates atoms in long-lived atomic (dark) states thereby reducing the entropy and energy. We present a scheme using a two-frequency laser field acting on two separate dipole transitions that supports dark atomic states in a spatially arbitrary three-dimensional (3D) field configuration. Monte Carlo simulations of a 1D model of velocity selection demonstrate a reduction of the velocity spread of the atomic ensemble to less than 1 nK. Schemes to combine selection and trapping of atoms to reduce phase space density in 3D by mode selection are discussed. \textcopyright{} 1996 The American Physical Society.
It is known [1-3], that the samples of atoms with a velocity spread much lower than the recoil velocity uR= ħk/M (k is the wave number of exciting light field, M is the mass of atom) can be obtained by use of velocity selection with stimulated Raman transitions. A theoretical analysis of the velocity selection method is presented in [2,3]. So, it was shown in [2] that the formation of such narrow velocity structures is performed not only by the counterpropagating, but also by co-propagating light waves. This fact allows to form the two-dimensional velocity distribution of the widths δvx,y « uR by the velocity selection technique using laser configuration as in Fig. 1b.
One-dimensional laser cooling based on velocity-selective coherent population trapping (VSCPT) has been investigated numerically through the solution of the optical Bloch equations and through a Monte Carlo analysis. The 1\ensuremath{\rightarrow}1 and 2\ensuremath{\rightarrow}2 transitions have been examined as a function of the atomic recoil frequency, the spontaneous-emission decay rate, and the Rabi frequency of the cooling laser. It has been found that for a large set of those parameters, the VSCPT cooling process may be described through scaling-law relations. The scaling laws are not valid at long atom-laser interaction times or large Rabi frequencies, where the atomic Doppler shift plays a significant role in the atomic motion evolution. Similar results for two atomic transitions suggest the validity of the scaling law for any one-dimensional VSCPT process. \textcopyright{} 1996 The American Physical Society.