We provide a theoretical analysis for a recently demonstrated cooling method. Two-level particles undergo successive adiabatic transfers upon interaction with counter-propagating laser beams that are repeatedly swept over the transition frequency. We show that particles with narrow linewidth transitions can be cooled to near the recoil limit. This cooling mechanism has a reduced reliance on spontaneous emission compared to Doppler cooling, and hence shows promise for application to systems lacking closed cycling transitions, such as molecules.
Laser cooling by sawtooth-wave adiabatic passage
J. Bartolotta,M. Norcia,J. R. Cline,James K. Thompson,M. Holland
Published 2018 in Physical Review A
ABSTRACT
PUBLICATION RECORD
- Publication year
2018
- Venue
Physical Review A
- Publication date
2018-06-08
- Fields of study
Physics
- Identifiers
- External record
- Source metadata
Semantic Scholar
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- counter-propagating laser beams
Two laser beams traveling in opposite directions and used here to interact with the particles during the sweep.
- doppler cooling
A standard laser-cooling mechanism that depends on velocity-dependent photon scattering.
- molecules
Multi-atom species with complex internal structure that are mentioned as a potential application target.
- narrow-linewidth transitions
Optical transitions with small spectral linewidths relative to the laser sweep dynamics.
- recoil limit
The temperature scale set by the momentum recoil associated with absorbing or emitting a photon.
- sawtooth-wave adiabatic passage
A laser-cooling method that uses repeated frequency sweeps to induce adiabatic population transfer in particles.
Aliases: SWAP
- spontaneous emission
Random photon emission from an excited state, treated here as a dissipation channel in laser cooling.
- two-level particles
Particles modeled with two relevant internal states for the cooling process.
REFERENCES
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CITED BY
Showing 1-27 of 27 citing papers · Page 1 of 1